Front and back foam. Infant size has a reflective pillow to help keep child's head out of the water. Leg strap on Infant and Junior sizes. Heavy-duty coated nylon. U.S. Coast Guard Approved/UL Listed. Screenprinted Yamaha logos.
Unisex.IN-Infant under 30 lbs.
JR-Junior fits 30 to 50 lbs.
YT-Youth fits 50 to 90 lbs.
NOTE: See chart for sizing information.
