Breathable cooling long sleeves designed to keep skin cool and protected during warm weather and active use. Key benefits Keeps skin cool: Breathable cooling fabric maintains comfort in hot summer or other warm conditions. Sun protection: Made to protect your arms from harmful sun rays during extended outdoor exposure. Secure, comfortable fit: Free size with high elasticity that fits well on most users, does not slip down from your upper arm, and does not create pressure or discomfort during activity. Versatile for many activities: Lightweight and flexible design suitable for sports and outdoor work. Material and performance Fabric composition: Cooling protofilament — 90% polyamide, 10% elastane. Breathability and stretch: The blend provides cooling airflow and stretch for unrestricted movement. Sleeve length: Full sleeve length is approximately 40 cm, covering the forearm and upper arm as intended. Size and compatibility Free size: High-elastic material accommodates a wide range of arm sizes without tightness or slipping. Compatible with layers: Wears comfortably under jerseys, jackets, or alone depending on conditions. Practical use scenarios Golf or tennis: Keeps arms cool during long rounds while reducing direct sun exposure and allowing full range of motion for swings. Cycling or jogging: Breathable fabric helps regulate temperature on long rides or runs; stays in place under short sleeves or jerseys. Gardening or boating: Protects skin from sun and light abrasion while remaining flexible and comfortable for repetitive tasks. What to expect A lightweight, stretchy sleeve that maintains position on the upper arm, provides cooling comfort, and helps shield skin from sunlight in a wide range of outdoor activities.