Material:

Front: Genuine Ostrich leather
Back: High-quality Cowhide leather

Measurement:

Size: 16mm, 18mm, 19mm, 20mm, 21mm, 22mm, 24mm
Strap length: 125mm x 75mm, we will customize the length per your size. 
Strap thickness: 5mm-2mm

Buckle: Silver-colored Buckle included

Feature: Quick-release spring bars

If you want other sizes, pls let me know, I will customize it perfectly for you