This Fitbit Ace 3 Band comes with a fun minion design for your little explorer to enjoy. It's adjustable and fits wrists from 116mm to 168mm in circumference, plus, its durable silicone construction makes it easy to clean and comfortable to wear. *watches sold separately Compatible Fitbit Ace 3 Size Small Features Swap out your little one's current Fitbit Ace 3 strap for this exciting, minion themed band. It's adjustable and fits wrists from 116mm to 168mm in circumference. It's constructed from a comfortable, easy to clean, silicone material and features an adjustable design. The Fitbit Ace 3 is water-proof and so is this band. It has a black, minion design, known as Mischief Black. This band comes in a smaller size and is designed for children.