Royal Robbins Men's Amp Lite II L/S (Deep Blue Heather)

The Royal Robbins Men's Amp Lite II Long Sleeve Shirt blends technical performance with everyday style, making it a perfect choice for warm, active days. Lightweight, quick-drying, and breathable, it protects you from mosquito bites—without the use of chemicals.

The innovative Mosquito Protection Technology™ is built into the tight weave of the fabric itself, offering long-lasting defense that doesn’t wash out or fade over time. This shirt keeps your skin shielded during hikes, travel, or relaxed outdoor days as it will protect you from UV-sunlight as well.

What sets this shirt apart is its use of HeiQ Smart Temp technology, a thermoregulating finish that responds to your body heat. As your temperature rises, the fabric structure opens up to release heat and moisture more effectively, helping the shirt feel up to 2.5°C cooler.

The 4-way stretch material moves naturally with your body and enhances airflow, keeping you dry and comfortable throughout the day. Weighing only 139 grams, this Amp Lite II LS Shirt delivers high-performance comfort you’ll barely notice you're wearing.

• Mosquito Protection Technology™ provides chemical-free mosquito protection that will not wash or wear away
• Equipped with HeiQ Smart Temp thermoregulating technology, breathability, moisture-wicking properties, and wrinkle resistance
• Fold-up collar with button closure for added neck protection
• Back pleat with integrated climbing cord locker loop for ventilation and function
• Side vents and underarm gussets for excellent mobility — ideal for climbing or paddling
• Adjustable two-button cuffs
• Straight hem with a hidden eyeglass wipe on the inside front
• Subtle embroidered Royal Robbins logo on the right rear shoulder
• Slightly tailored active fit, back length app. 77 cm (see size chart image)