We recommend ordering your standard size. When in doubt, size up. Check your baby's skin periodically as you introduce Squid Socks to them. Avoid overnight use, unless you place socks over pants/leggings. Discontinue if irritation occurs. Colors: Light blue, Cobalt, Navy Features: 100% silicone dots on inside cuff gently hold socks in place Silicone grips with size callouts on the bottom of sizes 6-12, 12-24, 2T-3T and 4T-5T help prevent slips and falls 85% viscose made from bamboo, 12% nylon, 3% spandex Moisture wicking & temperature control properties Buttery soft with hypoallergenic properties Super absorbent and keeps tiny feet drier Pre-washed (twice!) Seamless toe Breathable Squid Fit Technology- elastic bands in the cuff and around the foot's top and bottom arch for added comfort and flexibility Gift, gifting