Perfect design -- Compatible with Fitbit Blaze, with Metal Frame (smart watch not included). Adjustable band length (with removal tools) -- Fits well to your wrist, suitable for 5.5-8.1 inch wrists, width size: 23mm. The band comes with a removal tool that allows you to adjust the band length to your wrist. Change watch band within 10 seconds -- Watch band comes with an adapter on both ends, designed with a dual folding clasp, easy to install and remove onto your device, precisely and securely. Safe to wear -- High quality premium 316L stainless steel, prevents allergies. This watch band is designed with a dual folding clasp, which can be firmly worn and is easy to take off. (Please take this band off when doing outdoor work, avoid friction.) Dimensions: 7.48 x 3.94 x 0.35 inches.