SKIN CANCER FOUNDATION CERTIFIED - Your SwimZip is certified by the Skin Cancer Foundation, so you know it meets the highest standard in sun protection! TOTAL SUN PROTECTION: SwimZip's famous sunsuit offers full-length sleeves and leg coverage to block the sun's harmful rays from the skin of baby boys (up to little boys age 6). Cover up instead of lathering up with chemical suncreens! Our sunsuits are made from our signature UPF 50+ (SPF 50+) rash guard material, which blocks out 98% of the sun's harsh UVA and UVB rays. It's saltwater- and chlorine-resistant, quick drying, breathable, and offers 4-way stretch! FULL FRONT ZIPPER: Our swimsuit features a full front zipper for hassle-free dressing and undressing. This design makes diaper changes a breeze, ensuring quick and easy transitions, even when the outfit is wet. Diaper changes have never been easier! ULTRA COMFORT AND EASY CARE: Raglan cut sleeves for enhanced mobility and flatlock seams throughout the bathing suit provide for ultimate comfort and durability of the toddler swimsuit for boys giving full, free range of motion. Simply machine wash, line dry and your baby is ready to enjoy another day protected from the sun in this infant swimsuit. CHECK OUT OUR WHOLE CATALOG - We offer a huge assortment of UPF 50+ sun protective swimwear. There are separates (get your trunks/bottoms and a rash guard for a change of pace from the sunsuit!) as well as 2- and 3- piece sets for boys and girls. And adults, we have you covered as well! We have FAMILY MATCHING so get your whole crew looking cute while protecting them from the sun! The Boys' Long-Sleeve Sunsuit Romper Swimsuit with UPF 50+ Sun Protection from SwimZip is perfect for a day around the beach or pool - or anytime UV protection is needed! SwimZip's long sleeve, full-body rompers are made for fun in the sun. Protecting baby from the sun starts day one. Our full-zip one-piece swimsuit for babies, toddlers and little boys offer superior sun protection while staying easy to put on and take off, making diaper changing a breeze. All SwimZip swimwear provides UPF 50+ UV Protection and blocks 98% UVA and UVB rays (just like SPF 50 sunscreen). Be sure to pair with a SwimZip SPF 50+ Wide Brim Sun Hat or SwimZip flap hat for face and neck for easy, head-to-toe, all-day UV sun protection! Sizing: These are long sleeve, and legs are ankle/calf length on most kids.