The next day I went to Adidas Macaron Candy Children's Beach Sandals Size Chart. Measuring the foot length is the key to choosing the size. Different brands and different series of shoes will have different shoe sizes. Be sure to measure the baby's foot length and compare the foot length with the size chart [ Refer to Suitable Foot Length] Choose the number of sizes. Your child's foot length will change when he is 3 months old. Spend an extra minute choosing the size and save a week of changing sizes. Slippers, sandals