Best Insoles for Sandals & Flip-Flops

For those who’ve ever tried to fit a regular shoe insole inside a pair of sandals or flip-flops, you know how awkward and bulky the fit can be. To solve this problem, many brands have created insoles made specially for open-toed styles that are narrow in design and won’t peek through when you’re wearing your pairs. Offered in half-length or full-length options, our selection of the best sandal insoles provide great underfoot support and stay put via adhesive or hook and loop grips so the insole doesn’t slide around and neither does your foot.

For more than 75 years, Footwear News has been the shoe authority. Our coverage spans top industry news, retail trends, head-to-toe fashion, athletic and outdoor analysis and more. Footwear News’ global network of editors has carefully curated all product selections featured using our expansive brand knowledge and thorough research to find quality, long-lasting items. If you purchase an independently reviewed product or service through a link on our website, we may receive an affiliate commission.

1. Thong Joy Arch Support Insoles

A slit at the front of this option allows it to perfectly slide onto thong-toe sandals.

Pros: Gel padding supports the arch of the foot with beaded grip to keep sweaty feet from slipping. It also uses self-adhesive to stick to the shoe for continuous wear.

Cons: These may run small.

thong joy, sandal insoles
CREDIT: Courtesy of Amazon

2. NatraCure Gel Sandal Insert

This full-foot pad has a thong-toe finish for flip flops or open-toe styles.

Pros: The low-profile design absorbs shock, reduces rubbing and adds an extra layer of cushion with slip-free technology to hold the foot in place with each step.

Cons: These pads may not hold up during unexpected rainy weather.

natracure, sandal insoles
CREDIT: Courtesy of Amazon

3. Foot Supports Int'l Sandal Insoles

These insoles are super lightweight and mold to the footbed for lasting support.

Pros: Designed to improve balance and reduce stress on the arches, the unique arch support design stays firmly put with mini hook and loop attachments

Cons: It doesn’t include a slit for flip flops of thong-toe shoes.

foot support intl, sandal insoles
CREDIT: Courtesy of Amazon

Access exclusive content