Great Strap for my Hamilton Watch looks great, perfect fit, easy to swap out for another strap. Liked this strap so much I purchased another.
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Finding the perfect strap or accessory for your watch can greatly enhance comfort and style. Our sizing guides help you measure your watch accurately, ensuring the best fit. Whether you have a traditional watch or an Apple Watch, we provide step-by-step instructions to determine the ideal strap size and watch lug width. With these guides, you can confidently choose the perfect straps and accessories to enhance your watch.
1) Open Our Sizing Guide Here. Download Here - Traditional Watch Sizing Guide (PDF)
2) Print File. In print options dialogue box, uncheck any “shrink oversized pages to fit” or “fit to page” boxes. *IMPORTANT!*
3) After printing, test the accuracy by measuring the “one inch” test strip with a standard ruler.
4) Cut off the inch ruler from the side and wrap around your wrist to determine your wrist size.
5) Hold your watch with the lugs framing the blocks below to determine your lug width. There should be no gap or overlap.
To determine your lug width, print the BluShark Watch Sizing Guide in step-1 and place your watch on the measuring blocks located on the bottom of the guide.
1) Open Our Apple Watch Sizing Guide Here. Download Here - Apple Watch Sizing Guide (PDF)
2) Print File. In print options dialogue box, uncheck any “shrink oversized pages to fit” or “fit to page” boxes. *IMPORTANT!*

3) Cut out the tool. Position the wider end where you would wear a watch. For a more accurate measurement, you can use a piece of tape to hold the wider end in place.

4) Wrap the tool around your wrist, keeping it in place. Make sure the tool feels snug and doesn’t slide up or down.

5) Note the inch number the arrows point to – that’s your band size.

6) If the arrows land between two measurements, choose the smaller of the two numbers closest to the line.
To determine which size adapter you need, use the following guide:
If your Apple Watch is 42mm, 44mm, or 45mm, you’ll need an adapter that measures 22mm.
If your Apple Watch is 38mm or 40mm, you’ll need an adapter that measures 20mm.
If you have a 41mm Apple Watch, choose the 20mm adapter.
Unsure of your case size? You can usually find it on the back of your Apple Watch, near the sensor. Or, open the Apple Watch app on your iPhone, go to "My Watch" at the bottom, then tap General > About.
Not sure of your wrist size? Check our wrist size guide!
| Watch Model | Case Size | Order This Strap Size |
|---|---|---|
| Apple Watch (1st Gen) | 38mm | Small Strap |
| Apple Watch (1st Gen) | 42mm | Large Strap |
| Apple Watch Series 1 | 38mm | Small Strap |
| Apple Watch Series 1 | 42mm | Large Strap |
| Apple Watch Series 2 | 38mm | Small Strap |
| Apple Watch Series 2 | 42mm | Large Strap |
| Apple Watch Series 3 | 38mm | Small Strap |
| Apple Watch Series 3 | 42mm | Large Strap |
| Apple Watch Series 4 | 40mm | Small Strap |
| Apple Watch Series 4 | 44mm | Large Strap |
| Apple Watch Series 5 | 40mm | Small Strap |
| Apple Watch Series 5 | 44mm | Large Strap |
| Apple Watch Series 6 | 40mm | Small Strap |
| Apple Watch Series 6 | 44mm | Large Strap |
| Apple Watch SE (1st Gen) | 40mm | Small Strap |
| Apple Watch SE (1st Gen) | 44mm | Large Strap |
| Apple Watch Series 7 | 41mm | Small Strap |
| Apple Watch Series 7 | 45mm | Large Strap |
| Apple Watch Series 8 | 41mm | Small Strap |
| Apple Watch Series 8 | 45mm | Large Strap |
| Apple Watch SE (2nd Gen) | 40mm | Small Strap |
| Apple Watch SE (2nd Gen) | 44mm | Large Strap |
| Apple Watch Series 9 | 41mm | Small Strap |
| Apple Watch Series 9 | 45mm | Large Strap |
| Apple Watch Series 10 | 42mm | Small Strap |
| Apple Watch Series 10 | 46mm | Large Strap |
| Apple Watch Ultra | 49mm | Ultra Strap |
| Apple Watch Ultra 2 | 49mm | Ultra Strap |
Just like the Mako shark glides through the water with speed and precision, you can swap out straps quickly and effortlessly using the robust 1.8mm quick-release spring bars. Plus, no added bulk from an extra layer of material beneath the watch like you’d get with a pass-through strap, keeping the watch snug to your wrist, and the freedom to show off your watch’s case back without removing the strap!
Introducing the Ribbed Mako FN watch strap. Inspired by the formidably fast Mako shark, scientifically the unique binomial nomenclature of Mako foe nay-dough.
Built to stand apart, the Ribbed Mako FN features the same bold ribbed nylon weave as our Ribbed Single-Pass strap that adds depth and character, a third "faux: keeper that nods to the double-pass military look, a long tail for tucking, an extra sturdy buckle and tongue seen on our AlphaShark straps, and precision oval heat-sealed adjustment holes to minimize fraying over years of wear.
A great complement to most every watch from toolsy sport and dive watches to slim minimalist pieces and classic field watches.
Fit Details:
The Ribbed Mako FN watch strap is designed to comfortably fit wrist sizes from 6.25" to 9.75". Fit may vary depending on how tight or loose you prefer to wear your strap and the size of your watch. For wrists between 6.25" and 8.5", there will be enough length to tuck the strap under both keepers. For wrists above 8.5", the strap will stay secure under the keepers, but won’t have extra length for tucking.
This versatile strap pairs effortlessly with nearly any style of watch, from rugged Field Watches built for the outdoors, to Dive Watches designed for underwater adventures, Pilot Watches with their aviation-inspired functionality, Minimalist Watches that emphasize clean and simple design, Sport Watches made for high activity and performance, and Classic Tool Watches that blend durability with timeless style.
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Read MoreOverall rating: 4.7 / 5 from 146 reviews.
Great Strap for my Hamilton Watch looks great, perfect fit, easy to swap out for another strap. Liked this strap so much I purchased another.
Jack C. 5/5 Verified
Love it, best in my collection!!!!
Frank G. 5/5 Verified
Very nice
Dana M. 5/5 Verified
Excellent
John R. 5/5 Verified
Excellent strap. Quality is outstanding.
Lawrence M. 5/5 Verified
Good good good !!!👍
Trevor S. 5/5 Verified
The first keeper was bent, right out of the package, the other two are OK. Generally like the straps, but this one had a QC issue.
Richard G. 1/5 Verified
love the look and feel of the straps! highly recommended for others.
Kenny B. 5/5 Verified
Outstanding product and highly recommend Blushark straps for your time pieces
Vincent F. 5/5 Verified
Perfect
Michal H. 5/5 Verified
Blue shark makes awesome products! I’ve ordered multiple times and have never been disappointed! I am a watch guy and blue shark is my band store!
Michael D. 5/5 Verified
I really like the look. I was concerned that it isn’t a “real” NATO strap, but the quick release pins make it easy to change out when I need to have a different look. But, right now it’s getting the most time on my wrist.
Edward S. 5/5 Verified
comfortable and stands out. love it.
Christopher M. 5/5 Verified
The strap is AMAZING! Probably one of the best nato straps ever. Lovely vintage feel to it too!
Felix B. 5/5 Verified
I always have liked the NATO style strap, but find it uncomfortable. This strap from BluShark solved that problem! Got the look I wanted with the comfort of a traditional band. Quality has been great so far!
David N. 5/5 Verified
This strap looks so much better than the old worn out leather strap that came on my Hamilton Khaki Field! I love that it's a two-piece strap, so now I can look at the exposed caseback and movement from time to time.
Derek L. 5/5 Verified
Strap looks great. Sure beats the old worn out leather strap for my Hamilton Khaki Field!
Derek L. 5/5 Verified
Fits perfectly and looks great!
Michael S. 5/5 Verified
Fits perfectly and looks great!
Michael S. 5/5 Verified
Fits perfectly and looks great!
Michael S. 5/5 Verified
Awesome ribbed strap — effortless to swap with my other Blushark straps, super comfortable, and it looks fantastic on the wrist.
Gilbert D. 5/5 Verified
Band looks amazing and is very high quality.
James P. 5/5 Verified
astounding!!!
Rafael I. 5/5 Verified
Love it😎
Daniel P. 5/5 Verified
Love it😎
Daniel P. 5/5 Verified
Love it😎
Daniel P. 5/5 Verified
I loved this one the most!
Richard F. 5/5 Verified
Another excellent product, love it!
Richard F. 5/5 Verified
Great strap Looks amazing on my Bulova Lunar pilot. Dries fast and is super comfortable
Sjoerd S. 5/5 Verified
Love this band. So comfortable on my Apple Watch! Please make this band in a NATO! I would love this exact style in a NATO for my other watches!
Andrew C. 5/5 Verified
Ribbed Mako FN Band - For Apple Watch ULTRA - Black, Tan & Red
The strap is thinner than I expected, but it is light, strong, and very comfortable to wear; I am satisfied and will be ordering additional colors.
Duane M. 5/5 Verified
Olive & Red combines rugged, military-inspired style with the comfort and versatility of a two-piece design. Crafted from durable, breathable 1.3mm ribbed nylon with brushed stainless steel hardware and heat-sealed oval holes, it features a unique third faux keeper for a classic NATO look without the added bulk beneath the watch case. It offers an easy, tool-free installation thanks to built-in 1.8mm quick-release spring bars, fits wrist sizes from 6.25" to 9.75"
Quynh P. 5/5 Verified
Excellent quality. Very comfortable. Very happy with the product.
Chris L. 5/5 Verified
Your tolerances are off. I have many straps from Barton and others that are sold as 22mm bands that work perfectly. Your watches, despite being sold and marketed as 22mm bands were too small and did not grab as brands from other competitors do. In effect, they are unusable to me.
Lorenzo S. 1/5 Verified
Great strap, it’s longer than I thought but it’s also because of the lug to lug. Overall great strap, and will definitely buy different colors for other watches
Richard M. 5/5 Verified
I was looking for the perfect nato strap for my vintage Glycine Airman. I wasn't sure what style/colors would look best, so I bought a few. Some from BluShark, some from other companies. The idea was to rotate the straps, but once this one got on, it never came off. It feels amazing on my wrist, the perfect tension with just slight give for maximum comfort and stability. And it looks amazing.
Gordon R. 5/5 Verified
They sent the wrong product purchased and aren't responding to emails
Jeremiah C. 2/5 Verified
They sent the wrong product purchased and aren't responding to emails
Jeremiah C. 2/5 Verified
Excellent product
Steven F. 5/5 Verified
You guys are simply the best supplier of watch bands. My Bond strap is beautiful and with great stunning quality. Makes the watch Pop! Bam! Transformation complete. Regards David
David M. 5/5 Verified
Overall rating: 4.7 / 5 from 146 reviews.
Great Strap for my Hamilton Watch looks great, perfect fit, easy to swap out for another strap. Liked this strap so much I purchased another.
Jack C. 5/5 Verified
Love it, best in my collection!!!!
Frank G. 5/5 Verified
Very nice
Dana M. 5/5 Verified
Excellent
John R. 5/5 Verified
Excellent strap. Quality is outstanding.
Lawrence M. 5/5 Verified
Good good good !!!👍
Trevor S. 5/5 Verified
The first keeper was bent, right out of the package, the other two are OK. Generally like the straps, but this one had a QC issue.
Richard G. 1/5 Verified
love the look and feel of the straps! highly recommended for others.
Kenny B. 5/5 Verified
Outstanding product and highly recommend Blushark straps for your time pieces
Vincent F. 5/5 Verified
Perfect
Michal H. 5/5 Verified
Blue shark makes awesome products! I’ve ordered multiple times and have never been disappointed! I am a watch guy and blue shark is my band store!
Michael D. 5/5 Verified
I really like the look. I was concerned that it isn’t a “real” NATO strap, but the quick release pins make it easy to change out when I need to have a different look. But, right now it’s getting the most time on my wrist.
Edward S. 5/5 Verified
comfortable and stands out. love it.
Christopher M. 5/5 Verified
The strap is AMAZING! Probably one of the best nato straps ever. Lovely vintage feel to it too!
Felix B. 5/5 Verified
I always have liked the NATO style strap, but find it uncomfortable. This strap from BluShark solved that problem! Got the look I wanted with the comfort of a traditional band. Quality has been great so far!
David N. 5/5 Verified
This strap looks so much better than the old worn out leather strap that came on my Hamilton Khaki Field! I love that it's a two-piece strap, so now I can look at the exposed caseback and movement from time to time.
Derek L. 5/5 Verified
Strap looks great. Sure beats the old worn out leather strap for my Hamilton Khaki Field!
Derek L. 5/5 Verified
Fits perfectly and looks great!
Michael S. 5/5 Verified
Fits perfectly and looks great!
Michael S. 5/5 Verified
Fits perfectly and looks great!
Michael S. 5/5 Verified
Awesome ribbed strap — effortless to swap with my other Blushark straps, super comfortable, and it looks fantastic on the wrist.
Gilbert D. 5/5 Verified
Band looks amazing and is very high quality.
James P. 5/5 Verified
astounding!!!
Rafael I. 5/5 Verified
Love it😎
Daniel P. 5/5 Verified
Love it😎
Daniel P. 5/5 Verified
Love it😎
Daniel P. 5/5 Verified
I loved this one the most!
Richard F. 5/5 Verified
Another excellent product, love it!
Richard F. 5/5 Verified
Great strap Looks amazing on my Bulova Lunar pilot. Dries fast and is super comfortable
Sjoerd S. 5/5 Verified
Love this band. So comfortable on my Apple Watch! Please make this band in a NATO! I would love this exact style in a NATO for my other watches!
Andrew C. 5/5 Verified
Ribbed Mako FN Band - For Apple Watch ULTRA - Black, Tan & Red
The strap is thinner than I expected, but it is light, strong, and very comfortable to wear; I am satisfied and will be ordering additional colors.
Duane M. 5/5 Verified
Olive & Red combines rugged, military-inspired style with the comfort and versatility of a two-piece design. Crafted from durable, breathable 1.3mm ribbed nylon with brushed stainless steel hardware and heat-sealed oval holes, it features a unique third faux keeper for a classic NATO look without the added bulk beneath the watch case. It offers an easy, tool-free installation thanks to built-in 1.8mm quick-release spring bars, fits wrist sizes from 6.25" to 9.75"
Quynh P. 5/5 Verified
Excellent quality. Very comfortable. Very happy with the product.
Chris L. 5/5 Verified
Your tolerances are off. I have many straps from Barton and others that are sold as 22mm bands that work perfectly. Your watches, despite being sold and marketed as 22mm bands were too small and did not grab as brands from other competitors do. In effect, they are unusable to me.
Lorenzo S. 1/5 Verified
Great strap, it’s longer than I thought but it’s also because of the lug to lug. Overall great strap, and will definitely buy different colors for other watches
Richard M. 5/5 Verified
I was looking for the perfect nato strap for my vintage Glycine Airman. I wasn't sure what style/colors would look best, so I bought a few. Some from BluShark, some from other companies. The idea was to rotate the straps, but once this one got on, it never came off. It feels amazing on my wrist, the perfect tension with just slight give for maximum comfort and stability. And it looks amazing.
Gordon R. 5/5 Verified
They sent the wrong product purchased and aren't responding to emails
Jeremiah C. 2/5 Verified
They sent the wrong product purchased and aren't responding to emails
Jeremiah C. 2/5 Verified
Excellent product
Steven F. 5/5 Verified
You guys are simply the best supplier of watch bands. My Bond strap is beautiful and with great stunning quality. Makes the watch Pop! Bam! Transformation complete. Regards David
David M. 5/5 Verified