Brand: Magnetic Me eco-friendly TENCEL™ modal: sustainably sourced from beechwood trees, breathable, temperature regulating; fabric is pill-, fade- & 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. snug fit: sizes 9-12m and up follow snug-fit & flammability standards—consider sizing up. mitten cuffs: built-in fold-over cuffs for sizes up to 6m cover hands & protect from scratches. grippy feet: non-slip foot grips for sizes 9-12m and up. baby size weight height PRE (preemie) up to 5 lb up to 18" NB (newborn) 5 - 8 lb up to 21" 0 - 3M 8 - 12 lb 21.5 - 23" 3 - 6M 12 - 16 lb 23.5 - 26" 6 - 9M 16 - 19 lb 26.5 - 28" sizes 9 - 12M & up snug fit - footies & coveralls only* 9 - 12M 19 - 22 lb 28.5 - 30" 12 - 18M 22 - 27 lb 30.5 - 32" 18 - 24M 27 - 30 lb 32.5 - 34" toddler & big kids sizes 2T & up snug fit - pj sets only* 2T 28 - 30 lb 34.5 - 35" 3T 30 - 33 lb 35.5 - 37" 4T 33 - 36 lb 37.5 - 40" 5Y 36 - 42 lb 40.5 - 43" 6Y 42 - 48 lb 43.5 - 46" 7Y 48 - 54 lb 46.5 - 49" 8Y 54 - 63 lb 49.5 - 52" accessories, gowns, & outerwear OS (one size) up to 12 lb up to 23" NB - 3M up to 12 lb up to 23" 0 - 6M 5 - 16 lb 18 - 26" 6 - 12M 16 - 22