The Ultimate Guide to Watch Band Sizing: 18mm, 20mm, 22mm, and 24mm Explained

watch straps

Choosing a new watch strap is an exciting way to personalize and elevate your timepiece, but selecting the accurate size can be a bit daunting. As a friend and trusted expert, we understand the importance of finding the perfect fit to maximize comfort, style, and durability.

At BluShark, we offer a wide range of premium watch straps in various materials and designs, including nylon, silicone, and leather, available in 18mm, 20mm, 22mm, and 24mm sizes. Knowing which size to choose is essential, and we're here to help you navigate the world of watch band sizing like a pro.

In this comprehensive guide, we'll uncover the mystery of watch band sizing, focusing on the popular sizes available in our BluShark collection. We'll walk you through the process of measuring your watch's lug width to identify the appropriate strap size, ensure an ideal fit for both comfort and style, and share insightful tips on selecting the best size to suit your wrist and watch dimensions.

Whether you're a seasoned watch enthusiast or a newcomer to the world of wristwatches, this guide will provide valuable information to empower you to make confident and informed decisions when selecting your next watch strap. 

Understanding Lug Width: The Foundation of Watch Band Sizing

The first step to understanding watch band sizing is becoming familiar with the lug width, a crucial factor in determining the correct strap size for your watch. The lug width is the distance between the two lugs on the watch case, where the strap is attached.

Here's how to measure the lug width:

  1. Using a Ruler - Measure the distance between the lugs in millimeters with a precise ruler. A specialized watch ruler or digital caliper can also be utilized for added accuracy.
  1. Manufacturer's Information - Check the documentation or packaging that came with your watch, as many manufacturers provide the lug width in the specifications.
  1. Online Resources - Consult the manufacturer's website or utilize online search engines to find lug width information for your specific watch model.

Remember, it's crucial to be as precise as possible when measuring lug width, as even a 1mm difference can affect the fit and aesthetics of the strap.

Sizing Guide: 18mm, 20mm, 22mm, and 24mm Watch Bands

Now that you've identified your watch's lug width, let's explore BluShark's watch band sizes and their appropriate fit.

  1. 18mm Watch Bands - The 18mm size is ideal for smaller watches and suits slender wrists. This size is prevalent in women's watches, vintage timepieces, and some unisex models.
  1. 20mm Watch Bands - 20mm bands are versatile sizes that fit various wrist sizes and watch models. This size is popular in both men's and women's watches and offers a balanced look for most wrists.
  1. 22mm Watch Bands - As one of the most widespread sizes, 22mm straps are perfect for medium to large watches and suit individuals with larger wrists. Many popular dive watches and sports watches opt for this size due to its robust appearance.
  1. 24mm Watch Bands - The 24mm size is typically reserved for larger, more imposing timepieces and fits well on thicker wrists. These bands feature a more prominent profile, accentuating the watch's aesthetics and size.

Expert Tips for Achieving the Perfect Fit

In addition to selecting the appropriate size, consider the following expert recommendations when choosing your new BluShark watch strap:

Wrist Measurement - Measure your wrist circumference to ensure the strap is long enough to secure comfortably. BluShark offers both standard and long strap lengths, accommodating various wrist sizes.

Watch Case Size - Take into account the dimensions of your watch case. A larger case may require a wider strap for a balanced appearance, while a smaller case might look best with a narrower band.

Tapered Straps - Some watch bands are tapered, meaning they're narrower at the buckle end than the lug end. Tapered straps can offer a sleeker profile and more refined appearance, suitable for dressier timepieces.

Adjustability - Consider straps with multiple adjustment holes or adjustable buckles to achieve a comfortable, secure fit that can be fine-tuned as needed.

Strap Material Considerations

While size and fit are of utmost importance, also consider the material of your watch strap when making a selection. BluShark's premium nylon, silicone, and leather watch bands each offer unique benefits and styles suitable for different lifestyles and preferences. Be sure to choose a material that aligns with your personal taste.


Achieving the perfect fit when choosing a new watch strap is essential for both comfort and style. By understanding lug width, familiarizing yourself with BluShark's available sizes, and considering expert recommendations, you can enhance your watch-wearing experience and showcase your personal style with confidence. 

With the knowledge from our ultimate guide to watch band sizing, you're ready to explore BluShark's watch straps and discover the ideal fit for your unique wristwatch and fashion preferences.

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