Colorful, with a youthful selection of patterns, the Boys' T-Hot Tube is a technical piece with endless versatility. Lightweight warmth. SPF 20 for sun protection. Lightweight multi use tube silhouette for endless styling. Exclusive Nano technology keeps the body warm by absorbing heat, increasing the fabric temperature +5 degrees,... and lasts the lifetime of the garment. Custom sublimation ties back to Boy's collection. Space Dyed Stretch Jersey with Moisture Wicking Management.