Stretchy & Breathable – Osochic Samsung Watch Bands are made of premium strong stretchable elastic braided nylon material, which are lightweight, skin-friendly from irritation rash, and ultra-comfortable for all-day wear. The stretchy design ensures a snug fit without any pressure. Adjust As You Wish – The Galaxy watch 4 band features an adjustable stainless steel buckle allowing you to resize its length to your comfort level, suitable for 4.5"- 8.7" (114mm-220mm) wrist of women men. No tools required – Simply slip on and go.