Junior Core Rash Guard

Train hard and stay comfortable in the Hyperfly Core Junior Rash Guard, a lightweight short-sleeve rashguard built for everyday grappling. Inspired by classic sports jersey lines, it pairs a clean, athletic look with durable performance features for BJJ, MMA, and no-gi training. The sweat-wicking, four-way stretch fabric helps regulate heat during rounds, while the slightly roomier cut through the hips improves mobility without sacrificing a secure fit. Designed for: Kids/juniors BJJ, grappling, MMA, and training Fabric: 80% polyester / 20% spandex Fit: Unisex loose fit with an athletic, stay-put feel Mobility: Four-way stretch for scrambling and transitions Comfort: Flatlock seams help reduce chafing Performance: Sweat-wicking to help keep you cool Protection: UV protection for outdoor sessions Sizing: True to size FAQ Is this suitable for no-gi BJJ? Yes, this junior ranked rash guard is ideal for no-gi training and helps reduce mat burn. How should it fit? It’s true to size with a slightly roomier hip cut for comfort and movement while staying snug during rolls.