Save 20% On Your First Autoship Order

Online since 2002 |   866-316-0162

View product option

Superfeet FlexThin Insoles

Product Option

Size B, (Women 4.5 - 6/ Kids 2.5 - 4)

SKU FL143200-B
$34.99 Pair

Size C, (Women 6.5 - 8/ Men 5.5 - 7)

SKU FL143200-C
$34.99 Pair

Size D, (Women 8.5 - 10/ Men 7.5 - 9)

SKU FL143200-D
$34.99 Pair

Size E, (Women 10.5 - 12/ Men 9.5 - 11)

SKU FL143200-E
$34.99 Pair

Size C, (Women 12.5 - 14/ Men 11.5 - 13)

SKU FL143200-C
$34.99 Pair
Request quote

Superfeet FlexThin Insoles are designed to fit well in slim-fitting footwear, even some without removable insoles. FlexThin Insole has a high volume design providing MAX support and ideal for roomy footwear. It comes with a doctor-recommended Superfeet shape, the special flex design hugs the feet and cradles heels to help footwear.


Total: $34.99

Earn $1.05 in HPFY rewards

Superfeet FlexThin Insoles Features

  1. Durable Construction - Superfeet insoles keep their shape, delivering reliable support and comfort for up to 12 months or 500 miles, whichever comes first
  2. Aerospring Comfort Foam - 3mm thickness; durable, viscoelastic closed-cell foam layer absorbs impact to deliver comfort that lasts
  3. Moisturewick - With long-lasting odor control
  4. Dynamic Shape - Contoured to stabilize and support the foot, reducing stress on feet, ankles and knees
  5. Flexible Heel Cradle - Horseshoe-shaped heel cradle provides structure and stability
  6. Ventilated Forefoot - Improves air circulation and breathability
  7. Beveled Edge The beveled foam edge improves the fit in tighter fitting footwear
Superfeet Flex Thin Insole

What to buy with Superfeet Orthotic Insoles

How to clean FlexThin Inserts?

  • Handwash with mild soap and lukewarm water
  • Use an old toothbrush with soft bristles if needed
  • Rinse well, remove excess water with a soft towel and allow to air dry, but not near a heat source
  • Do not machine wash or dry

How to trim Superfeet FlexThin Insoles?

  1. Remove the original insole from your shoes
  2. Put the original shoe insole on top of the new shoe insole
  3. Line up and trace the insole using a pen
  4. Trim your new insole. Be sure the insole is trimmed correctly
  5. Insert the trimmed shoe insole in your shoes

Compare Your Superfeet Insoles

  Flex Thin Insole Flex Max Insole Superfeet Green Insole


Flex Thin

Flex Max

Green Insole


Athletic comfort

Athletic comfort

Comfort and pain relief

Insole thickness




Arch Type








Fits best in

Slim-fitting footwear

Tighter fitting footwear

A wide variety of footwear

Superfeet FlexThin Insoles FAQs

Size Chart for FlexThin Inserts

Size Circumference
B Women (4.5 - 6/ Kids 2.5 - 4)
C Women (6.5 - 8/ Men 5.5 - 7)
D Women (8.5 - 10/ Men 7.5 - 9)
E Women (10.5 - 12/ Men 9.5 - 11)
F Women (12.5 - 14/ Men 11.5 - 13)


Superfeet Flex Thin Insole Warranty

Limited 60 days warranty

Product Videos

Related Articles


{{x.ShortDescription}} ...


Customer Reviews

Please enter your and your friends email address below.

Fields marked with * are compulsory

Your Name*
Your Email Address
Friend's Name*
Friend's Email Address
The selected product information along with Reward Dollar coupon code has been successfully emailed to you and your friend.

Thank you for using