Swiftwick Flite XT Mid-Crew Socks Size:M Next-generation optical heart rate and

Next-generation optical heart rate and SpO2 sensors

Adjustable textile strap

the backpack also has a chest strap for added comfort and stability

08420HC Serrated Knife

Internal sleeve with hose routing port and Hydraclip for easily hanging hydration reservoir

Swiftwick Flite XT Mid-Crew Socks Size:M Next-generation optical heart rate andThe Flite XT is the most technologically advanced sock ever developed, providing all around stability. It offers moisture wicking fibers, blister free performance, and medium compression for lasting arch support at any cuff height. AnkleLock Technology GripDry Fiber Made in USA Moisture Wicking Lifetime Performance Guarantee Fabric tech AnkleLock Technology GripDry Fiber CUSHIONING Medium For versatile comfort COMPRESSION Moderate For flexible support