What is C3fit and how does it work?

C3fit™ products are compression garments that help regulate your physical condition during exercise to improve athletic performance. Our full-length tights and Calf sleeves, in particular, offer graduated compression that stimulates blood flow and improves circulation. (Medical compression garments in Japan)

Can I wear C3fit garments for activities other than sports?

C3fit™ garments can be worn after an activity for better recovery. C3fit™ garments also help to reduce the swelling and fatigue associated with prolonged periods of standing, deskwork and travel.

Can I wear C3fit garments when sleeping?

We do not recommend wearing compression garments when sleeping since there is less need for compression where there is minimal effect of gravity.

Should I wear an underwear underneath C3fit?

C3fit tights can be worn with or without underwear. If you choose to wear an underwear, we recommend a fitted one.

What socks should be worn with C3fit garments?

We recommend short ankle socks. If wearing with Calf sleeves or full-length tights, we advise you to wear your socks over them. The use of compression or knee-high socks that overlap Calf sleeves and full-length tights (above the ankle) is not recommended due to the risk of cutting the circulation and a loss in balanced graduated compression pressure.

Will Perfomance Calf Sleeves slip down?

C3fit™ Performance Calf Sleeves is designed to stay in place. However, slipping down may occur depending on individual differences in physique and fit.

There are other compression garments available in the market. What benefits do C3fit offer that others don't?

C3fit is a compression wear brand that includes items filed for general medical device of graduated compression tights by Japanese Ministry of Health, Labor and Welfare. All items use locally procured materials, and are developed, designed, and manufactured in Japan.

*Certified general medical device for graduated compression include Performance Long Tights, Inspiration Long Tights, Performance Calf Sleeves, Inspiration Calf Sleeves, Arch Support High Socks.

Will C3fit garments weaken muscle strength?

C3fit™ products do not reduce muscle strength. They are designed to improve athletic performance during an activity and to reduce swelling and fatigue in daily life, and have no adverse impact on your current muscle strength.

Can I wash C3fit garments?

All C3fit™ products are machine washable. See the "Washing Care Label" on your garment and attached document "Caution on Washing" for details.

Do C3fit garments offer UV protection?

All C3fit™ products offer 40+ UV protection for safety in the sun (measured value at 30% stretching).

In what sort of situations do Paper Fiber Socks demonstrate their advantages to the fullest? Can you please also describe the socks' features?

The rough feeling material keeps you feeling dry even when the socks become wet. Socks will often get wet from sweating due to long hours of wear, such as during an ultra marathon or endurance race. Paper Fiber Socks offer lasting dryness to keep you feeling comfortable. In addition, their rough texture creates moderate friction to prevent rubbing between socks and feet. If socks and feet rub when feet are macerated (skin is soft and wrinkled from prolonged exposure to moisture), skin peels from the feet or blisters develop. Paper Fiber Socks make your feet less prone to these troubles, minimizing foot problems.

You can see the yarn trimmings if you turn the Paper Fiber Socks inside out. Is there a reason for this?

To produce a taping effect, these socks employ not only a different type of knitting but also a different type of yarn in the taping section. Sock knitting machines, by their nature, are not cut-and-sew machines, and therefore, cannot sew, adhere, or do other finishing work with the ends of the inserted paper-yarn. For this reason, the ends of the inserted yarn remain slightly in excess to prevent it from casting off. If there are less yarn ends remaining, the section with the different yarn type will become loose and start to detach. Especially in the longitudinal arch support section, there are parts where the stiches are not in parallel and switches to vertical or angled, resulting in the yarn ends remaining in these parts. On top of this, some extra yarn must be left over, and accordingly, yarn ends remain.

How much paper fiber is used in Paper Fiber Socks? (Composition ratio)

53% nylon, 26% other fiber (paper fiber), 18% polyester, 3% polyurethane

49% nylon, 26% other fiber (paper fiber), 21% polyester, 4% polyurethane

46% nylon, 38% other fiber (paper fiber), 14% polyester, 2% polyurethane

What are the washing instructions for Paper Fiber Socks? Is there a recommended temperature setting??

Paper Fiber Socks may be washed in a washing machine with a temperature setting of no higher than 60°C.

How do I know my size?