
FS6+ Performance Foot & Calf Sleeves
The FS6+ Performance Foot & Calf Sleeves provide medical grade orthopedic support and graduated compression to prevent and/or ease the pain of Plantar Fasciitis, Achilles Tendonitis, and more, powered by Compression Zone Technology. The FS6+ is an innovative design that combines the benefits of the FS6 & CS6 Performance Sleeves in one easy-to-use bracing sleeve. Thin, light and more comfortable to wear, the FS6+ offers a unique, high-tech alternative to traditional compression socks, fitting easily under preferred performance socks. Our moisture-wicking fabric keeps legs and feet cool in the heat and warm in the cold, all while providing the support of a premium sports compression brace.
Targeted Conditions:
- Plantar Fasciitis
- Achilles Tendonitis
- Heel/Arch Pain
- Shin Splints
- Leg Cramps & Fatigue
- Enhanced Oxygenation
Performance Features:
- Provides continuous support of the Plantar Fascia
- Supports the arch and the overall foot structure
- Stabilizes Achilles tendon and ankle
- Creates a better sense of balance
- Reduces impact vibration of the calf muscle
- Post-event recovery
- Boosts oxygenation
- Achilles stabilization
- Medical Grade Compression
FS6+ Size Chart

Helpful TipsTo care for your new socks, check our Care Guide below!
|
1. Hand wash with gentle detergent, NO bleach 2. Dry naturally away from direct heat |
Tulis FAQ's
1. What are Tuli’s Heavy Duty Heel Cups?
Tuli’s Heel Cups are shock-absorbing inserts designed to sit under your heel inside your shoes. The Heavy Duty version is thicker and provides extra cushioning for high-impact activity or long days on your feet.
2. What shoes do they fit into?
They fit most lace-up shoes including runners, school shoes, work shoes and everyday sneakers. They may feel too snug in very tight dress shoes.
What’s the difference between Classic and Heavy Duty?
Classic = standard thickness for everyday shoes.
Heavy Duty = roughly twice as thick, ideal for sport, high-impact activity and roomier footwear.
How long do they last?
They’re durable, reusable and designed for daily wear. Most people move them between different pairs of shoes.