Instant purchase OK(^^♪ Fitbit Alta HR Replacement Band Watch Belt Adjustable Size Unisex Compatible models: Fitbit Alta/Fitbit Alta HR Material: High-quality TPU material (eco-friendly, non-toxic) Sizes: S wrist circumference 140mm-170mm, L wrist circumference 170mm-206mm This band uses high-quality materials, combining flexibility and durability. The length can be freely adjusted with the buckle, and you can choose from many colors, suitable for both men and women. ※Notes Please note that the color and texture may differ slightly from the actual product due to the image quality of your computer. Returns and exchanges due to customer convenience are not accepted. If the product you received differs from the item you purchased, or if the product does not function, is dirty, or is damaged, we will exchange it free of charge. (Returns and exchanges are accepted within 7 days of product arrival. Please note that returns and exchanges will not be accepted after that.) 〈Shipping Method〉 Ships daily after 18:00. Basically, it will be shipped by regular mail and delivered directly to your mailbox in about 3-5 days.