Sporty thermal vest for ski touring warm and water resistant stretchy, extremely breathable inserts eco-friendly production The Sesvenna Vest is an eco-friendly thermal layer for athletic ski tours. The lightweight vest with PrimaLoft® Silver Insulation Eco fill has stretch inserts for great flexibility on tour. Performance Stretch side zones are highly breathable and provide improved freedom of movement. The form fitting thermal vest has a very small pack size and can easily fit into fully loaded backpacks. The vest is made with eco-friendly, water repellent Eco Finish and is manufactured without the use of fluorocarbons (PFC). Green Shape guarantees environmentally friendly products made from sustainable materials, resource-efficient manufacturing and fair production.