Toddler rain boots Size information 13 / 5M US Toddler: inside Length 13cm/5.12” ; baby foot length 12cm/4.72” 14 / 6M US Toddler: inside Length 14cm/5.51” ; baby foot length 13cm/5.12” 15 / 7M US Toddler: inside Length 15cm/5.91” ; baby foot length 14cm/5.51” 16 / 8M US Toddler: inside Length 16cm/6.30” ; baby foot length 15cm/5.91” 17 / 9M US Toddler: inside Length 17cm/6.69” ; baby foot length 16cm/6.30” 18 / 10M US Toddler: inside Length 18cm/7.09” ; baby foot length 17cm/6.69” In order to purchase an appropriate size for your child, please give your child's feet to do some measurements, the specific measurement methods refer to our pictures Note: As product's material, may have taste when you receive the product. But it is safe, can be dissipated after a period of time. Hope you can understand, thank you!