Made of medical-grade rubber, hypoallergenic, soft and comfortable for sporting time. Come with a metal buckle design,keep the wristband from coming loose and falling off. This adjustable band with two sizes [small size: 4.7-6.2 inchs(120-165 mm), Regular size: 6.0-9.0 inches (152-230 mm)] fits most wrist,you don't have to worry about improper size. Personalized Your activity tracker to fit your mood and match your fashion daily style. Note:Tracker not included; Designed for Garmin Vivofit 3 and Vivofit JR;30-Days unconditional money back;6-month warranty for quality-related issues. iBREK for Garmin Vivofit 3 jr jr 2 Bands Adjustable Replacement Wristbands with Watch Buckle for Kids Women MenNo Tracker - B3TPB5J9Z