GUIDELINES Choose Guide: Our watch band length fits wrists from 6" to 9" in circumference, which covers most of the population.To select width, measure width of watch lug or width of current band at connection point and then select width closest to measurement ( 18mm, 20mm or 22mm ). Watch geometry will also impact fit. Purchase Guide: Our Military Ballistic Nylon watch strap adapts premium ballistic nylon webbing makes it comfortable to wear and gray matte finish stainless steel buckle makes it fashion when you wear it. Each holes and ends are Laser Heat Sealed to prevent fraying.We provide a full refund if you are not satisfied with the nylon watch bands you received within 30 days. Wear Guide: Refer to diagram in picture above. With spring bars installed in watch, feed long portion of strap between spring bar and watch casing, behind watch head and up through other spring bar. Then run through stainless steel ring on short strap to secure.If band is longer than desired, fold free end neatly back into the keeper loop or cut to desired length. If trimmed, expose cut end to match or lighter flame to avoid fraying. Ritche nylon watch straps provide the ultimate combination of comfort and durability. Premium ballistic nylon webbing and silver stainless steel make it comfortable to wear. Advanced laser heat sealed technical makes it smooth and not scratch hands. Also it is WASHABLE and DURABLE. Material: Seatbelt weave nylon, 1.5mm thickness Hardware: 316L Surgical grade stainless steel Widths: 18mm, 20mm, 22mm Length: 10.5 inches (18mm, 20mm) 11 inches（22mm） Hardware: 316L Surgical grade stainless steel Widths: 18mm, 20mm, 22mm Length: 10.5 inches (18mm, 20mm) 11 inches（22mm） Color Multi-colors Multi-colors Multi-colors Multi-colors Multi-colors Multi-colors Size 24mm 18, 20, 22, 24mm 18, 20, 22, 24mm 16, 18, 20, 22, 24mm 16, 18, 20, 22, 24mm 18, 20, 22mm Buckle Color Black Silver Black Black Silver Silver Material Nylon Nylon Nylon Nylon Nylon Nylon