eco-friendly tencel modal: sustainably sourced from beechwood trees, breathable, temperature regulating, pill, fade and run resistant. sewsafe magnetic closures make for easy dressing and changes. easy care, machine wash. features based on size: magnetic closures: magnets line the seam from the neck to upper thigh for sizes up to 0-3m & from neck to crotch for sizes 3-6m and up. mitten cuffs: built-in fold-over cuffs for sizes up to 6m cover hands & protect from scratches.