Aerosmith 'I Heart Aerosmith' Red Infant Romper Aerosmith infant onesie features the 'I Heart' design Super-soft 100% pre-shrunk cotton Lap shoulder and 3-snaps allow for easy on/off and quick diaper changes. 0-6 mon - 5-10lbs; 6-12 mon - 11-15 lbs; 12-18mon - 16-20 lbs; 18-24 mon = 21-25 lbs