OS1st | IT3 Performance ITB Sleeve | Unisex Ski Sock Engineered with Topo's signature spacious

Engineered with Topo's signature spacious toe box

HEIQ clima management for optimal temperature control

The blue colorway is closest to the original rosemaling

designed for runners

Supports and stabilizes the patella and improves circulation

OS1st | IT3 Performance ITB Sleeve | Unisex Ski Sock Engineered with Topo's signature spaciousMORE OS1st PRODUCTS IT3 Sleeve: Effective Relief for ITB Syndrome and Pain Find relief from ITB Syndrome and related discomfort with the IT3 Sleeve, designed for superior comfort and performance. Featuring a hypoallergenic gel support system, this sleeve stays securely in place during activity, delivering consistent support where you need it most. Its slim, low profile design easily fits under any apparel, including tights, offering a more comfortable