Premium Materials, Built to Last
• FKM rubber for superior strength & heat resistance
• Sweat-proof, waterproof, & adventure-ready
• Unmatched comfort & everyday wearability
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.
The Single Pass FKM Rubber watch strap is a brand-new style in our collection. We took the classic single pass-through strap, usually made from nylon or fabric, and reimagined it with FKM rubber. This means you get the style you love with all the benefits of high-quality rubber, it’s soft, flexible, durable, and completely water- and sweat-proof.
This strap has a slight stretch, which comes in handy when wearing it over a wetsuit or needing a bit of extra give during activities. The fine texture feels smooth on your skin but still provides enough grip to keep it secure, while also adding a bit of visual depth compared to totally smooth straps. Whether you’re swimming, working out, or just wearing it day to day, the Single Pass FKM Rubber strap is ready for anything. Plus, with plenty of colors to choose from, it’s easy to find one that pairs perfectly with your favorite watch.
FKM rubber
Color: Black
Length: 247mm (9.7")
Fits Wrist Sizes: 6.5 - 8.5in
Thickness: 1.3mm
Lug Widths: 20mm, 22mm
Flexible and durable
Keepers: Two sliding rubber keepers
Premium brushed stainless steel or PVD Black buckle
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.
I can't fault the description of this strap: it is indeed thin and stretches a great deal. But I don't know of what watch would be light enough to not flop around on the wrist when worn with this strap.
Again tho, if the description fits your needs, this strap will absolutely do what it's said to do!
Decent price on this band in difficult to find white - other places sell the exact same strap for a lot more.
I have two like this and they bulge out from the watch like a NATO, so if you don't like that, beware. Otherwise comfortable.
Thick/heavy in feel, but not in measurable thickness. I wish the closer strap keeper were a bit thicker to slide over the stitched area where the buckle is attached. Excess strap doesn't fold well, so would likely need to be cut to fit the user sizing. Strap isn't breathable, but wasn't expected to be. I would buy another one. Quality seems good.
Store owner replied:
Hey Pablo,
Really sorry this color isn't going to work for you. While we do our best to ensure colors are shown as accurately as possible in our photos, this can sometimes be tricky. Color can vary depending on the type of screen you’re viewing on, screen brightness, and even the lighting in the room. In some cases, a strap can also appear slightly different in person depending on whether you’re indoors or outdoors due to changes in lighting and reflections to the material.
This is part of why we offer free returns and exchanges. I've just sent you an email so we can help you set up a return or exchange.
I needed a strong, flexible strap for a big watch with fixed loop lugs. Works great. Not too thick. Like the texture. I will get more I think for other watches.
First time trying a NATO strap, I figured it would be easier changing it out compared to how Casio bands normally need to be swapped. Comfortable, doesn’t move around and isn’t tight
The BEST rubber watch strap I have ever own!! Seriously, i have tried dozens of rubber watch band and it is hard to find a good one. I am going to buy all the colors here for the single-pass rubber watch strap. Highly recommend it.
Store owner replied:
So happy to hear you love the new strap, Jean!
Superb quality product, even more superb service! Came with so much goodies and even come with candies! What a great touch! Thank you for the amazing experience.
Perfect for my Citizen titanium pilot's watch! A thin, lightweight one-pass rubber strap makes sense when used on a very light and slim titanium watch.
A shortish strap. If you have a smaller-sized wrist, i.e, under 7 inch, or ideally 6.5 inch or under, it's probably a good strap. On my 7.75" wrist, it didn't work at all, in spite of the description.
Store owner replied:
Hi Michael,
Nick here with BluShark Straps. I'll reach out to you through email regarding this review and see if you’d be willing to share a bit more detail and maybe a couple of photos so we can better understand the issue.
I have an 8.5" wrist and use the 4th-to-last hole with plenty of strap left to tuck under both keepers, so I’m curious about which watch you’re pairing it with and why the fit isn’t working for you. Any added details will help us making this strap even better! Also, If the strap isn't working well, we can set up a free exchange.
This khaki green FKM Blu Shark watch band is the perfect companion to my Prevail military watch. I couldn't be happier!
I can't fault the description of this strap: it is indeed thin and stretches a great deal. But I don't know of what watch would be light enough to not flop around on the wrist when worn with this strap.
Again tho, if the description fits your needs, this strap will absolutely do what it's said to do!
Decent price on this band in difficult to find white - other places sell the exact same strap for a lot more.
I have two like this and they bulge out from the watch like a NATO, so if you don't like that, beware. Otherwise comfortable.
Thick/heavy in feel, but not in measurable thickness. I wish the closer strap keeper were a bit thicker to slide over the stitched area where the buckle is attached. Excess strap doesn't fold well, so would likely need to be cut to fit the user sizing. Strap isn't breathable, but wasn't expected to be. I would buy another one. Quality seems good.
Store owner replied:
Hey Pablo,
Really sorry this color isn't going to work for you. While we do our best to ensure colors are shown as accurately as possible in our photos, this can sometimes be tricky. Color can vary depending on the type of screen you’re viewing on, screen brightness, and even the lighting in the room. In some cases, a strap can also appear slightly different in person depending on whether you’re indoors or outdoors due to changes in lighting and reflections to the material.
This is part of why we offer free returns and exchanges. I've just sent you an email so we can help you set up a return or exchange.
I needed a strong, flexible strap for a big watch with fixed loop lugs. Works great. Not too thick. Like the texture. I will get more I think for other watches.
First time trying a NATO strap, I figured it would be easier changing it out compared to how Casio bands normally need to be swapped. Comfortable, doesn’t move around and isn’t tight
The BEST rubber watch strap I have ever own!! Seriously, i have tried dozens of rubber watch band and it is hard to find a good one. I am going to buy all the colors here for the single-pass rubber watch strap. Highly recommend it.
Store owner replied:
So happy to hear you love the new strap, Jean!
Superb quality product, even more superb service! Came with so much goodies and even come with candies! What a great touch! Thank you for the amazing experience.
Perfect for my Citizen titanium pilot's watch! A thin, lightweight one-pass rubber strap makes sense when used on a very light and slim titanium watch.
A shortish strap. If you have a smaller-sized wrist, i.e, under 7 inch, or ideally 6.5 inch or under, it's probably a good strap. On my 7.75" wrist, it didn't work at all, in spite of the description.
Store owner replied:
Hi Michael,
Nick here with BluShark Straps. I'll reach out to you through email regarding this review and see if you’d be willing to share a bit more detail and maybe a couple of photos so we can better understand the issue.
I have an 8.5" wrist and use the 4th-to-last hole with plenty of strap left to tuck under both keepers, so I’m curious about which watch you’re pairing it with and why the fit isn’t working for you. Any added details will help us making this strap even better! Also, If the strap isn't working well, we can set up a free exchange.
This khaki green FKM Blu Shark watch band is the perfect companion to my Prevail military watch. I couldn't be happier!
Find Your Strap Size Here
