Austrake Silicone Wristbands for Fitbit Alta,Soft,2 PACK Fits Fitbit Alta only -- Personalized design for Fibit Alta, good replacement of your original Fitbit Alta Band. Wrist Size--Small 5.5"-6.7"(140mm-170mm);Large 6.7"-8.1"/(170 mm-206 mm). Softness--Made from high quality flexible, soft ,durable silicone materials make these bands your go-to accessory through exercise, sweat, sleep and beyond. Comfortable--Replace your band and change a nice look for your watch from day to night and work to weekend.Just enjoy your exercise, enjoy your life. NOTE: 2x Fitbit Alta Classic Soft Silicone Sport Bands+ Free Metal Clasp/Silicon Fasteners; The tracker is not included.