Summer Sandos – Berry Amazing Print Sandos for Kids. The fabric of the vests is a soft and breathable cotton material. The set comes in a pack of six soft and brightly colored comfortable vests with cute prints. It is easy to wash and dry and can be hand-washed, machine washed. This sando is a relaxed fit for everyday wear. Stay comfortable all year round. Baby boys Vest comfortably to wear all day long. This is made from skin-friendly high-quality cotton, special smoothness enhancing fresh knit.