Choosing a NATO strap or a two-piece strap

Attachment methods for both strap styles

A watch strap connects your watch to your wrist using different designs. A classic two-piece strap consists of exactly 2 separate parts. Each part attaches directly to the watch lugs using a spring bar. To fit this style, you must remove the spring bars, place the strap end between the lugs, and insert the bars into the holes.

In contrast, a NATO strap is a single continuous piece of material. It does not attach directly to the spring bars. Instead, the spring bars remain on the watch, and the strap passes behind the watch case. This design has its roots in the British military issue strap. We offer 591 options in nylon to suit this style, allowing you to change the appearance of your watch quickly.

Wrist profile and case height

The way a watch sits on your wrist depends on the strap design. A two-piece strap keeps the watch case directly against your skin. This keeps the profile low, which helps the watch slide under a shirt cuff.

A NATO strap adds extra material beneath the watch. The classic design places 2 layers under case, which raises the height of the watch on your wrist. If you prefer a lower profile but like the pass-through style, a single-pass strap is an alternative. A single-pass strap places only 1 layer under case. This small difference changes how the watch wears, making it sit closer to your skin while keeping the safety of a continuous strap that threads through both bars.

Security and spring bar safety

The main functional difference between these designs is security. If you wear a two-piece strap and one spring bar fails, the watch will detach from that side. The strap will open, and the watch will fall from your wrist.

With a NATO strap, the watch stays on the wrist if one spring bar fails. Because the strap passes through both spring bars, the remaining bar keeps the watch attached to the fabric. This is the primary safety feature of the British military issue strap. For active wearers, this safeguard prevents dropping or losing the watch during physical movement, protecting your timepiece from hard impacts on the ground.

Choosing for dress or sport

Your choice of strap affects the style of your watch. A two-piece strap is the traditional option for formal wear. It looks neat and keeps a low profile. We have 1452 choices in leather that fit dress watches.

For sports and outdoor activities, a NATO strap is often more practical. The material is washable and resists water. If you prefer a classic metal look, we also stock 394 steel options. For casual daily wear, both styles work well, but the two-piece option remains the favourite for professional environments where a discreet appearance is preferred.

How to fit your strap

Fitting a NATO strap is straightforward if you follow these steps at a table. You will need a spring bar tool to prepare the watch.

Using quick-release spring bars makes the swap tool-free for future changes.

• Lay the watch face down on a soft cloth to avoid scratching lugs.
• Use a spring bar tool to remove the old strap, taking care not to lose a spring bar.
• Reinstall the spring bars onto the watch case without any strap attached.
• Thread the long end of the NATO strap down through the top spring bar and up through the bottom bar.
• Pass the long end through the metal keeper loop on the short piece of the strap.
• Adjust the watch position until it sits comfortably between the loops.

Finding your match

To find the right strap, you must measure the distance between the lugs of your watch. We match watch straps to watches by lug width to ensure a proper fit. You can browse our collection to find your next strap. If you want a classic look, explore our leather straps. For a durable, water-resistant option, check our nylon straps. Measuring your watch accurately will ensure the strap fits securely between the lugs.