FAQ

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 sleeves, in particular, offer graduated compression that stimulates blood flow and improves circulation. (Medical compression garments)

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 sleeves or full-length tights, we advise you to wear your socks over them. The use of compression or knee-high socks that overlap 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, Performance Calf Sleeves, Comfort 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).

How do I know my size?

Compression Tights/Men's

GLOBAL XS S M L XL BXS BS BM BL
Height (feet) 5.2-5.6 5.4-5.7 5.6-5.9 5.7-6.1 5.9-6.2 5.2-5.6 5.4-5.7 5.6-5.9 5.7-6.1
Weight (pound) 106-143 121-159 137-174 152-190 168-205 137-174 152-190 168-205 183-220
Waist (inch) 28-30 29.5-32 31-33.5 32.5-35 34.5-36.5 31-33.5 32.5-35 34.5-36.5 36-38
JAPANESE S M L XL XXL BS BM BL BXL
Height (cm) 160-170 165-175 170-180 175-185 180-190 160-170 165-175 170-180 175-185
Weight (kg) 48-65 55-72 62-79 69-86 76-93 62-79 69-86 76-93 83-100
Waist (cm) 71-77 75-81 79-85 83-89 87-93 79-85 83-89 87-93 91-97

Compression Tights/Women's *Including Inspire Fit Tights

GLOBAL XS S M L RXS RS RM
Height (feet) 4.9-5.2 5.1-5.4 5.2-5.6 5.4-5.7 4.9-5.2 5.1-5.4 5.2-5.6
Weight (pound) 95-128 106-139 117-150 128-161 117-150 128-161 139-172
Hip (inch) 33.5-35.5 34.5-36.5 36-38 37-39.5 36-38 37-39.5 38.5-40.5
JAPANESE S M L XL RS RM RL
Height (cm) 150-160 155-165 160-170 165-175 150-160 155-165 160-170
Weight (kg) 43-58 48-63 53-68 58-73 53-68 58-73 63-78
Hip (cm) 85-90 88-93 91-97 94-100 91-97 94-100 98-103

Calf Sleeves/Unisex

GLOBAL XXS XS S M L XL
Calf (inch) 11.8-13.4 12.6-14.2 13.4-15.0 14.2-15.7 15.0-16.5 15.7-17.3
JAPANESE XS S M L XL
Calf (cm) 30-34 32-36 34-38 36-40 38-42

Arm Sleeves/Unisex

GLOBAL S M L
Arm Width (cm) 20-23 24-27 28-32
Arm Width (inch) 7.9-9.1 9.4-10.6 11.0-12.6

SOCKS/Unisex

GLOBAL S M L XL
M's USA (inch) 6-8 8-10 10-12
W's USA (inch) 5-7 7-9 9-11 10-12
EU 36-38 38-40 40-43 43-46
JAPANESE (cm) 22-24 24-26 26-28 28-30

High Socks/Unisex

GLOBAL 5S 7S 7M 9S 9M 9L 11L
Shoe Size M's USA (inch) - 7-9 9-11 11-13
Shoe Size W's USA (inch) 6-8 8-10 10-12 -
Calf (inch) 13.0-15.0 13.0-15.0 14.2-16.1 13.0-15.0 14.2-16.1 15.4-17.3 15.4-17.3
GLOBAL 5S 7S 7M 9S 9M 9L 11L
Shoe Size EU 37-39 39-41 41-43 43-45
Shoe Size JAPANESE (cm) 23-25 25-27 27-29 29-31
Calf (cm) 33.0-38.0 33.0-38.0 36.0-41.0 33.0-38.0 36.0-41.0 39.0-44.0 39.0-44.0