Toddler life jacket fits ages 1-3. This is brand new, never worn, still in package (only removed to take pictures). Bought it for a day on a boat and didn’t end up going and now my child is too big for it. See below for info from product page. Gender: Unisex Specifications: Size: S: Recommended weight 8-18 kg / 17-39 lb --- Recommended age 1-3 Years SWIM EASIER-Our toddler girl jacket can help kids float and keep balance in water, more freedom and confidence to swim and play. Help your child learn to swim faster and easier. Can be used in swimming pools, beaches, on boats or by the lakeside.