SwimZip Palm Sizes: 6-12 months, 18-24 months, 2 years, 3 years *Please comment with your desired size before purchasing. The lightly stretchy material is not too tight and provides an excellent fit. Unlike rash guards from surfer brands, which are made tightly for cold protection, this relaxed design prioritizes "sun protection." This rash guard feels like regular clothing and is comfortable to wear all day. It excels in design and is perfect for everyday use, not just at the beach or pool, but also for playing in the park! The zipper is designed to prevent the skin from getting caught around the neck and abdomen. Full-zip rash guards are popular because they are easy to put on small children. High-quality, quick-drying material. SPF50+ (UPF) blocks 98% of UV rays. Highly effective for UV protection. *Machine washable *Formaldehyde tested. ●SwimZip swimwear is on sale.