PERFECT FIT: STOX Energy Socks are perfect for hiking, trekking and the outdoor enthusiast. Experience ultimate comfort and support while walking. The socks are made of merino wool. They prevent skin irritation and blisters. EFFECT: STOX Energy Socks contain compression. This improves blood circulation in the legs. This prevents swollen feet and heavy, tired legs. SUPERIOR QUALITY: STOX Energy Socks are premium compression socks made of high quality and durable materials. Pressure class 2 Compression (23-32 mmHg). 100% Made in Italy. WARRANTY: 30 days money back guarantee and free shipping on all orders. Already more than 250,000 satisfied users. Rated 4.6 out of 5 on Trustpilot based on 13,000 reviews.