SWAP WITH NO TOOLS: Buy multiple and swap daily to compliment your wardrobe or mix and match with our other bands to take your timepiece from dressy to casual. Simply slide quick release knob with finger as shown in diagram. Change bands in seconds with no tools. SELECT CORRECT WIDTH: Compatible with any traditional or smart watch that uses 20mm spring bars. It's important that your watch's lug width matches exact. Measure where the band meets the watch casing or find the specifications for most watches by searching online. After determining your watch's proper lug width, select the correct size width from the drop-down menu. HIGH QUALITY, SUPER COMFORTABLE - Our soft Black silicone watch bands feel great on your arm and are made to last from high quality materials. Breathable and resistant to sweat which makes the band great for exercising. Unisex bands look great on males or females and can dress up any watch. SMART WATCH COMPATIBILITY - Any watch with 20mm lugs. Compatible with Apple Watch 38/40mm (See link below to purchase adapters) Fossil Q Gazer, Riley Touchscreen, Riley Hybrid, Riley Pave / Huawei Watch 2 / Samsung Galaxy Watch 42mm, Active, Gear S2 Classic, Gear Sport Smartwatch 43mm / Misfit Command, Vapor, Vapor 2 / MoreFit / Halo Fitness Tracker HR / Moto 360 for Men (2nd Gen 42mm) / Pebble Round 20mm / Skagen Horisont Special-Edition / Do smarter Surpro Smart Watch TRADITIONAL WATCH COMPATIBILITY - Compatible with Daniel Wellington Classic 40mm / Komono Lewis, Walther, Winston, Apex / MVMT Element Chrono 40, 40 Series, Arc Automatic, Modern Sport, Revolver Series, Rise Series / Nixon Time Teller 37mm, Porter 40mm / Seiko SSA Presage Cocktail Time / Skagen Aaren Kulor, Ancher, Falster 1 & 2, Hagen Slim / Timex Standard, Waterbury, Fairfield 41, Easy Reader 40mm, Naxi XL, Expedition Scout 40 Watch & Chronograph, T42571 Expedition / Cluse Arivas Silicone easy change watch bands from WRISTOLOGY make changing your style easy! Simply depress the small knob on the back of the strap to release and add your new strap with no tools required! Fits any wrist 4-8.5"