OS1st FS4+ White - Advanced Recovery and Compression Socks The OS1st FS4+ White is a high-performance compression sock designed to aid in recovery and provide relief for foot and leg discomfort. Combining five graduated compression zones with targeted support, these socks are perfect for addressing conditions such as plantar fasciitis, heel spurs, shin splints, Achilles tendonitis, sore heels, and arch pain. The FS4+ accelerates recovery and promotes better circulation, making it ideal for athletes and anyone seeking relief from chronic foot and leg pain. Key Benefits and Features Multi-Condition Relief: Designed to help relieve foot and leg problems, including plantar fasciitis (heel spurs), shin splints, Achilles tendonitis, and sore heels. Graduated Compression Zones: Features five strategically placed compression zones to enhance circulation, reduce swelling, and support muscle recovery. Support for Plantar Fascia: Like other OS1st products, the FS4+ offers dedicated support for the plantar fascia, helping to reduce pain and discomfort from heel spurs. Accelerates Recovery: The sock is designed to promote faster recovery by improving blood circulation and providing support during and after intense physical activity. Anatomically Designed: FS4+ socks are designed for an optimal fit, ensuring they stay in place without restricting movement, allowing for comfort during all activities. When to Use OS1st FS4+ Socks The OS1st FS4+ White socks are perfect for: Plantar Fasciitis (Heel Spurs): Helps alleviate pain and inflammation in the heel and arch. Achilles Tendonitis: Provides relief and support to the Achilles tendon. Shin Splints: Reduces swelling and supports muscle recovery. Sore Heels & Arch Pain: Eases discomfort and accelerates healing. Faster Recovery: Supports quick muscle recovery and reduces soreness after intense exercise. How to Find Your Perfect Fit To choose the correct size for your OS1st FS4+ White socks, measure the circumference of your ankle and calf: Size Ankle Circumference Calf Circumference Shoe Size Small 17-22 cm 24-27 cm 33-36 Medium 21-27 cm 30-43 cm 37-41 Large 25-31 cm 35-48 cm 42-46 XL 30-35 cm 37-51 cm 47-50 If you're unsure between two sizes, it's recommended to choose the larger size for a more comfortable fit. Product Details Material: 20% Lycra Spandex, 80% Micro-Nylon Colors: White Sold in Pairs Graduated Compression Zones Zone 1: 10-15 mmHg Zone 2: 20-30 mmHg Zone 3: 15-20 mmHg Zone 4: 20-30 mmHg Zone 5: 20-30 mmHg