17.5µm Merino Wool Arm Sleeve (130g)

Product Specifications: * HIGH QUALITY Merino Wool Arm Sleeve: 87% Merino Wool, 13% Nylon.* Fabric: 17.5 micron merino wool.* Size:  S: 26cm upper arm circumference, 48cm length.  L: 27cm upper arm circumference, 51cm length. * How to measure upper arm circumference:1. Relax muscles, then bend arm 90 degrees.2. Measure the maximum circumference of the biceps muscle. * TIPS:1. Arm sleeves do not have elasticity — purchase according to the size chart.2. Measure arm circumference when the arm is relaxed.