- Size: 22/23 • Non-slip and quick-drying: Flexible rubber sole that protects feet from rocks and stones, and allows for quick drying. • Stretchy and breathable fabrics: Neoprene and rubber upper, with polyester interior for added comfort and breathability. • Easy to put on and take off: Elastic cuff and heel loop for a comfortable and easy fit. • Size: Measure your baby's foot before buying and choose the correct size according to our size chart. • Multipurpose: Ideal for water park, beach, swimming, pool, hiking, jogging, fishing, yoga, and dance. Perfect for family outings.