Size Guide

Not Sure What Band Size to Pick? Let’s Make It Easy.

We’ll help you find the perfect match in seconds.

👇 STEP 1: Find Your Watch Model

What Apple Watch Do You Own?

  • Apple Watch Ultra / Ultra 2 (49mm)

  • Series 1–10 & SE: These watches generally come in two sizes: large and small.

We show these sizes on the website as: 44mm / 45mm / 46mm for the large and 40mm / 41mm / 42mm for the small watches. Apple changes the mm size almost every year, but the same bands fit all generations. 

Example: Series 10 comes in 46mm and 42mm. Series 9 comes in 45mm and 41mm.

If you're not sure, please look at the back of your watch and find the size as shown below:

👇 STEP 2: Measure your wrist

The Leather Strap R01 and our other leather straps are a one-size-fits-most, from 7" to 9" wrist circumference (from average to large male wrists). 

How to measure your wrist:

Use a tape measure or a piece of paper to measure just above the wrist bone (where your watch sits).

Here are the exact measurements so you can compare our strap with your current one.

Still unsure? Email our team at support@robustgoods.com and we’ll help in under 24 hours.