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.
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.
Lug Width Measurement:
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.
• Apple Watch Instructions
1) Open Our Apple Watch Sizing Guide Here.DownloadHere
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.
Adapter Measurement:
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.
Prices shown are in USD. Applicable taxes and shipping fees are calculated at checkout based on your location.
AlphaShark Slim - Silver Lining Watch Strap
DISCONTINUED STRAP: we're retiring this strap soon, so buy yours now before they're gone! No returns or exchanges will be allowed.
The slimmed-down version of our AlphaShark luxury nylon watch strap, in solid silver. Crafted from high tensile strength "seat belt" nylon, the AlphaShark Slim is only 1.2mm thick. The nylon is extremely soft and pliable and it is adorned with premium hardware including a sliding keeper. If you love the AlphaShark, but would like something with a lower profile, the AlphaShark Slim is for you. It's a great option for watches with little clearance between the case and spring bars, like many Rolex models.
AlphaShark Collection - The luxury nylon watch strap
Solid silver/ gray
BluShark 1.2mm thick high sheen nylon weave cleanly stitched around the buckles
Deluxe hardware including a premium buckle and flat keepers including one sliding keeper
Available with polished or brushed stainless steel hardware
Orders ship from our Tucson, AZ warehouse. US orders deliver fast with free shipping on $50+ and low-cost standard options; international shipping is available via UPS and DHL with full tracking.
We offer Free Returns with pre-paid return labels! Items can be returned or exchanged within 30 days if unused. Discounted or worn products may not qualify, and refunds for bundle deals are adjusted accordingly.
All straps are covered against manufacturing defects for life. If you experience a defect, simply contact us with your order details for a free replacement. Normal wear, misuse, and cosmetic aging are not covered.
The same as the "Marine Nationale" colorway I got with it, this gray double pass performs exactly great. It looks great and feels great on the wrist. Even though it's a super slim double pass, it still manages to hold the watch head firmly locked in place. Good stuff!
Just me mindful , that being this thin it might not hold as long as the heavier or more premier models.
It's a perfect solution for someone who is looking for a comfortable NATO and a low profile.
Thanks Blushark!
Loving the thinness, very comfortable wear. I love the subtle contrast of the stitching directions. Better than a boring solid colored band, yet it doesn’t have big contrasting colored stripes which could grab too much attention.
Another nice alternative for my Bulova Lunar Pilot. The stap is the same thickness as the Premier straps, 1.2mm but with round holes instead of rectangular ones. While I prefer the rectangular holes, the "slim" straps offer additional color ways to wear. Would definitely recommend.
Love the slight shine this silver gives off. Excellent quality for the design of the strap. I've seen others complain about early fraying around the holes on the strap. Find that sweet spot for your wrist when mounting the strap to the watch to prevent excessive tension on the holes.
I ordered 3 slim straps (Silver, Bond and Black). Alas one was incorrect in width and buckle colour
but, after prompt and courteous service, the replacement has just arrived so all is well. I am new to Nato straps but to my eyes these are superbly crafted and the quality shines through. More to the point I passed on the incorrect strap to a watch collector friend who has NATO's from various manufacturers and he was so deeply impressed that he's about to place an order. Bravo from a delighted customer!
I love the material used in the construction of these slim straps but I’m not a fan of the adjustment holes. Maybe it’s because of the thickness/thinness of the strap but there definitely seems to be a stretch or elongation of the hole. Maybe the use of a rivet like I’ve seen on other straps would correct this problem. That being said I bought a second exact same strap for my 20 mm watches. So....
The NATO straps I received have been excellent! The quality is 2nd to none and is awesome! I will refer anyone I know to Blushark that is interested in purchasing straps for their watches! I'm a member of the Urban Gentry! The Dailt Wrist Watch Check and other watch clubs on Facebook and have shared my straps with them via posts! Great job. Will purchase more in the future!
First off, I would say that I own many NATO straps from the various lines they offer. These are some of my favorite on the market, and I have been a happy customer for a while now. With that being said, this is my least favorite by far. While it is in fact very slim, it really just doesn't feel up to the same quality as the others. The adjustment holes in particular feel low quality and started to stretch and elongate immediately when I started wearing the strap. The holes are close enough that it is only a matter of time until the hole I usually use breaks and blends into the next one. They are circular on these, not the typical squared of type on other lines.
The strap looks great, but the quality is not as I expected. After a day of use the strap starts tearing apart in the hole where the pin holds the strap. Se foto
As always I love these straps. These slim straps are killer for a watch with short lugs. They are just as luxurious as the alpha straps just thinner. Perfect fit.
Awsome Strap on my SEIKO SZSC005 , quality and comfort all in one and great appreance, cant tell about the longevity. But expect to enjoy it for a long time.
I find this one slightly more comfortable then the Original series, but by a slight margin, both are great value.
This is the best and most comfortable strap of all that I had.
It is thin, comfortable, elastic and soft that makes wearing extremely comfortable.
I recommend all these straps "Slim line" to buy and consider them the best product on this site.
The same as the "Marine Nationale" colorway I got with it, this gray double pass performs exactly great. It looks great and feels great on the wrist. Even though it's a super slim double pass, it still manages to hold the watch head firmly locked in place. Good stuff!
Just me mindful , that being this thin it might not hold as long as the heavier or more premier models.
It's a perfect solution for someone who is looking for a comfortable NATO and a low profile.
Thanks Blushark!
Loving the thinness, very comfortable wear. I love the subtle contrast of the stitching directions. Better than a boring solid colored band, yet it doesn’t have big contrasting colored stripes which could grab too much attention.
Another nice alternative for my Bulova Lunar Pilot. The stap is the same thickness as the Premier straps, 1.2mm but with round holes instead of rectangular ones. While I prefer the rectangular holes, the "slim" straps offer additional color ways to wear. Would definitely recommend.
Love the slight shine this silver gives off. Excellent quality for the design of the strap. I've seen others complain about early fraying around the holes on the strap. Find that sweet spot for your wrist when mounting the strap to the watch to prevent excessive tension on the holes.
I ordered 3 slim straps (Silver, Bond and Black). Alas one was incorrect in width and buckle colour
but, after prompt and courteous service, the replacement has just arrived so all is well. I am new to Nato straps but to my eyes these are superbly crafted and the quality shines through. More to the point I passed on the incorrect strap to a watch collector friend who has NATO's from various manufacturers and he was so deeply impressed that he's about to place an order. Bravo from a delighted customer!
I love the material used in the construction of these slim straps but I’m not a fan of the adjustment holes. Maybe it’s because of the thickness/thinness of the strap but there definitely seems to be a stretch or elongation of the hole. Maybe the use of a rivet like I’ve seen on other straps would correct this problem. That being said I bought a second exact same strap for my 20 mm watches. So....
The NATO straps I received have been excellent! The quality is 2nd to none and is awesome! I will refer anyone I know to Blushark that is interested in purchasing straps for their watches! I'm a member of the Urban Gentry! The Dailt Wrist Watch Check and other watch clubs on Facebook and have shared my straps with them via posts! Great job. Will purchase more in the future!
First off, I would say that I own many NATO straps from the various lines they offer. These are some of my favorite on the market, and I have been a happy customer for a while now. With that being said, this is my least favorite by far. While it is in fact very slim, it really just doesn't feel up to the same quality as the others. The adjustment holes in particular feel low quality and started to stretch and elongate immediately when I started wearing the strap. The holes are close enough that it is only a matter of time until the hole I usually use breaks and blends into the next one. They are circular on these, not the typical squared of type on other lines.
The strap looks great, but the quality is not as I expected. After a day of use the strap starts tearing apart in the hole where the pin holds the strap. Se foto
As always I love these straps. These slim straps are killer for a watch with short lugs. They are just as luxurious as the alpha straps just thinner. Perfect fit.
Awsome Strap on my SEIKO SZSC005 , quality and comfort all in one and great appreance, cant tell about the longevity. But expect to enjoy it for a long time.
I find this one slightly more comfortable then the Original series, but by a slight margin, both are great value.
This is the best and most comfortable strap of all that I had.
It is thin, comfortable, elastic and soft that makes wearing extremely comfortable.
I recommend all these straps "Slim line" to buy and consider them the best product on this site.
Find Your Strap Size Here
