The Hot Chillys Men's Micro-Elite Chamois Zone Zip-T in Navy/Navy is a high-performance base layer designed to deliver warmth, comfort, and flexibility. Made from a superior blend of polyester and spandex, it offers excellent moisture-wicking properties and a 4-way stretch design, allowing for unrestricted movement during any activity. The strategically placed panels provide a body-conforming fit that ensures warmth without compromising freedom of motion. Trust in Hot Chillys' Micro-Elite Chamois technology for a durable, reliable base layer built to keep you comfortable season after season. Features: Comfort active stretch seam construction Seams set away from shoulder for added comfort Zip through collar with interior wind flap Moisture transfer fibers Thumbholes 4-way stretch for unlimited movement Bio-Silver Odor Blocking properties UPF 30 protection Midweight, body fit 89% polyester, 11% spandex .size-chart-wrap { max-width: 920px; } .size-chart-title { font-family: Arial, Helvetica, sans-serif; font-size: 18px; font-weight: 700; color: #111; margin: 0 0 12px; } .size-chart-table { width: 100%; border-collapse: collapse; font-family: Arial, Helvetica, sans-serif; font-size: 15px; } .size-chart-table th, .size-chart-table td { padding: 10px 12px; border-bottom: 1px solid #e6e6e6; text-align: center; vertical-align: middle; } .size-chart-table th { font-weight: 700; color: #111; background: #f6f7f9; } .size-chart-table td:first-child, .size-chart-table th:first-child { text-align: left; font-weight: 600; } /* Mobile horizontal scroll */ @media (max-width: 640px) { .size-chart-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; } .size-chart-table { min-width: 620px; } } Men's Tops Size Chart Measurement S M L XL XXL Chest (in) 35–37 38–40 42–44 46–48 50–52 Chest (cm) 89–94 95–101 102–112 113–122 123–132