Well used but still lots of life left. One zipper is missing the little piece but you can still move it up and down easily and the label is basically washed out as we used this sleep sack all summer season last year. This was the best TOG I could find for our hot house during summer and we already bought next size because we loved so much. A small is 6-18 months. From website: " A wearable blanket for little ones always on the move. Made for warmer weather, this 0.5 TOG Sleep Bag Walker keeps your little one cozy and covered without being too hot. The soft, breathable bamboo fabric feels pleasantly cool the the touch and wicks away moisture for comfortable sleep all night long. Cut with ribbed ankle cuffs for a feet-out design, this Sleep Bag Walker functions as a wearable blanket that allows safe mobility. Exterior: 97% Bamboo Rayon, 3% Spandex Filling: 100% Polyester Breathable material Dual zipper 0.5 TOG"