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 Shark Gill rubber watch strap is inspired by the functional anatomy of a shark's gills, which efficiently channel water for breathing. This same principle has influenced designs in various industries. For instance, the Porsche 930 famously featured shark gill-like vents to enhance cooling while adding an iconic design element. Similar gill-inspired features can be found in high-performance sportswear and even architecture, all using this natural form to improve airflow and efficiency. The venting of the Shark Gill Rubber strap makes for a practical and stylish option for sporting and water-based activities.
Made from premium FKM rubber, it features durable stainless steel hardware in Brushed or PVD Black, two keepers, and quick release pins for easy strap changes. The strap is 3.3mm thick and the two pieces measure 78mm x 125mm with a 2mm taper. The strap is slightly curved at the lug connection for a comfortable fit right out of the package.
FKM Rubber
Length: 78mm x 125mm
Premium stainless steel hardware in Brushed and PVD Black
Fixed and adjustable rubber keepers
2mm taper to the buckle
Equipped with quick release pins
Fits 6.25" to 8.5" wrists
Spring Bar: Standard Spring Bar - 1.4mm body and 0.7mm tip
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 purchased the red 20mm for my old Seiko Flightmaster and this band really transformed the watch! It matched perfectly with the red second & tachymeter hands and looks very modern and sporty. I wasn't wearing this watch much anymore so I wanted a band that would really make it pop, to update it. This fit the bill perfectly. Plus I love the features, like the pre-curved pin tunnels, and longer strap end which tucks away nicely, doesn't stick out or get caught on clothing. The buckle is just terrific. It's thick, beautifully brushed, and very upscale looking. Plus I love the embossed "BluShark"! Five stars, and two thumbs up!
Love these Shark Gill FKM rubber straps from BluShark! I ordered in 3 colors as the buy 2 get 1 free is such a good deal and too hard to pass up. Very pleased with the color and quality- it is very soft and comfortable and I can tell it will last. These are a great alternative to the expensive apple ocean bands. I like that they taper to the buckle and I can also use them on my 22mm mechanical watches. Oh and their customer service is top notch. Had one small hiccup with my order and Nick fixed it in no time. Thanks BluShark team! I will definitely be ordering more in the future.
I’ve purchased several straps from Blue Shark and have always been pleased with their products and customer service. Great Watch straps at a fair price and quick shipping. Highly recommend !!!
I stumbled upon your website while looking for watch bands, and I am totally happy with my purchase. Your band is very soft, comfortable, and exquisite in quality. I am a customer for life now!
I got this Duckworth Prestex watch years ago because of the killer dial. But the starp was made of leather, which can be awful in summer. Plus, my experience tells me that rubber straps are always the best, any season. So I got this orange strap that not only is comfortable and beautiful, but also fits the watch perfectly and makes it more beautiful than it was.
Excellent strap in all respects. The FMK rubber is super comfortable, the strap looks great, it's well made, and the hardware is excellent. I especially like that the strap is not overly long. A real winner!
I love the feel of the bands they really are high quality and I would buy again! The only thing is I wish I had the black buckle and I emailed customer service after placing my order but it was too late so I never heard back, other than that I’m happy with my purchase!
Store owner replied:
Hey Adam, Sorry to hear you received a defective adapter. I sent over and email for more information. I'd be happy to send our replacement adapters at no cost to you!
The strap arrived quickly. Fits the watch perfectly! Thank you
I purchased the red 20mm for my old Seiko Flightmaster and this band really transformed the watch! It matched perfectly with the red second & tachymeter hands and looks very modern and sporty. I wasn't wearing this watch much anymore so I wanted a band that would really make it pop, to update it. This fit the bill perfectly. Plus I love the features, like the pre-curved pin tunnels, and longer strap end which tucks away nicely, doesn't stick out or get caught on clothing. The buckle is just terrific. It's thick, beautifully brushed, and very upscale looking. Plus I love the embossed "BluShark"! Five stars, and two thumbs up!
Love these Shark Gill FKM rubber straps from BluShark! I ordered in 3 colors as the buy 2 get 1 free is such a good deal and too hard to pass up. Very pleased with the color and quality- it is very soft and comfortable and I can tell it will last. These are a great alternative to the expensive apple ocean bands. I like that they taper to the buckle and I can also use them on my 22mm mechanical watches. Oh and their customer service is top notch. Had one small hiccup with my order and Nick fixed it in no time. Thanks BluShark team! I will definitely be ordering more in the future.
I’ve purchased several straps from Blue Shark and have always been pleased with their products and customer service. Great Watch straps at a fair price and quick shipping. Highly recommend !!!
I stumbled upon your website while looking for watch bands, and I am totally happy with my purchase. Your band is very soft, comfortable, and exquisite in quality. I am a customer for life now!
I got this Duckworth Prestex watch years ago because of the killer dial. But the starp was made of leather, which can be awful in summer. Plus, my experience tells me that rubber straps are always the best, any season. So I got this orange strap that not only is comfortable and beautiful, but also fits the watch perfectly and makes it more beautiful than it was.
Excellent strap in all respects. The FMK rubber is super comfortable, the strap looks great, it's well made, and the hardware is excellent. I especially like that the strap is not overly long. A real winner!
I love the feel of the bands they really are high quality and I would buy again! The only thing is I wish I had the black buckle and I emailed customer service after placing my order but it was too late so I never heard back, other than that I’m happy with my purchase!
Store owner replied:
Hey Adam, Sorry to hear you received a defective adapter. I sent over and email for more information. I'd be happy to send our replacement adapters at no cost to you!
The strap arrived quickly. Fits the watch perfectly! Thank you
Find Your Strap Size Here
