The key to keeping backless shoes on your feet comes down to two things: reducing extra space inside the shoe and increasing friction between your skin and the material. Most slipping happens because the shoe is slightly too large, your foot is sweating against a smooth insole, or both. The good news is that a combination of inexpensive inserts, the right hosiery, and a few clever tricks can make mules, slides, and clogs feel surprisingly secure.
Start With the Right Size
Backless shoes are less forgiving than closed-back styles when it comes to fit. Even a half size too large can mean constant slipping, because there’s no heel counter holding your foot in place. If you’re between sizes and have a narrow foot, size down. If your foot is wider, sizing up is usually more comfortable, but you’ll need to pair that choice with one of the grip methods below to compensate for the extra room.
When trying on backless shoes, pay attention to where your toes sit. Your toes should reach close to the front edge of the footbed without hanging over. A gap of more than a centimeter between your longest toe and the front of the shoe usually means the shoe is too long, and your foot will slide forward with every step, lifting your heel off the back.
Insoles and Inserts That Actually Help
The most effective quick fix for backless shoes that slip is adding material inside the shoe to take up space and create friction. Several options work well, but they solve slightly different problems.
Tongue pads stick to the underside of the shoe’s upper (the part that covers the top of your foot). They push your foot back toward the heel of the shoe, filling the gap that lets your foot slide forward. These work especially well in mules and clogs where the vamp covers a decent portion of the top of your foot.
Ball-of-foot cushions are thin pads that stick to the insole right where the ball of your foot rests. They add a slight ridge that your foot grips against, preventing the forward slide that pulls your heel away from the shoe. Look for ones made from suede or microfiber rather than smooth gel, since textured surfaces grip skin and socks better.
Silicone heel inserts get mixed reviews. Some people find they provide excellent cushioning and grip, while others report a squishy feeling underfoot and notice their foot actually sliding more on the silicone surface. If you try silicone inserts, test them for a few minutes at home before committing to a full day. Gel inserts can shift around inside the shoe, so adhesive-backed versions tend to stay put better than loose ones.
Moleskin strips are a favorite among people who need both grip and blister prevention. Cut a strip and stick it directly onto the insole or along the inside of the vamp where your foot makes contact. Moleskin’s soft, slightly fuzzy texture creates natural friction against skin without feeling sticky or uncomfortable. It’s also cheap and easy to replace when it wears out.
What You Wear on Your Feet Matters
Bare feet and smooth leather or synthetic insoles are a slippery combination, especially once you start sweating. Even a thin layer of hosiery can dramatically improve grip.
No-show socks designed with silicone grips on the bottom are ideal for backless shoes. The silicone dots or strips on the sole of the sock create friction against the insole, while the fabric absorbs moisture that would otherwise make your foot slide. Look for styles with non-skid material across the entire bottom rather than just at the heel, since backless shoes need grip along the full length of the foot.
If socks aren’t an option with your outfit, try a light dusting of foot powder or antiperspirant spray on the soles of your feet before stepping into the shoes. Reducing moisture goes a long way toward keeping your foot planted on the insole. Some people swear by a thin layer of hairspray on the insole itself for temporary stickiness, though this can degrade certain materials over time.
Fashion Tape and Adhesive Strips
Double-sided fashion tape, the same kind used to keep plunging necklines in place, works on shoes too. Apply a small strip to the insole where the ball of your foot sits, or along the inside of the vamp where it touches the top of your foot. The tape sticks to your skin on one side and the shoe on the other, creating a temporary bond that holds the shoe in place while you walk.
Fashion tape works best for events or short outings rather than all-day wear. Sweat loosens the adhesive over several hours, and you may need to reapply. Use tape specifically labeled as skin-safe to avoid irritation, and test it on a small area of skin first if you have sensitive skin or allergies to adhesives.
DIY Strap Modifications
If you love a particular pair of backless shoes but can’t keep them on no matter what, adding a strap is a more permanent solution. Clear elastic cord is the most discreet option. You can thread it through small holes punched near the sides of the shoe’s opening, creating a transparent strap across the back of your heel or around your ankle that’s nearly invisible from a distance.
Detachable shoe straps are also sold as accessories. These clip or hook onto the sides of the shoe and wrap behind your ankle, converting a backless shoe into something closer to a slingback. They come in various colors and widths, from thin clear bands to decorative chains. A cobbler can also add a permanent slingback strap to most mules for a relatively low cost, typically matching the strap material to the shoe.
Walking Technique for Backless Shoes
How you walk in backless shoes is different from how you walk in sneakers or boots. Taking long strides lifts your heel high off the shoe with each step, which is the main cause of that slapping sound and the feeling that the shoe is about to fly off. Shortening your stride and keeping your steps relatively flat reduces the amount your heel separates from the shoe.
Engaging your toes slightly with each step also helps. Think of it as gently gripping the footbed as you walk, almost like you’re picking up the shoe with your toes as your foot moves forward. This takes practice, and it won’t fix a shoe that’s genuinely too big, but it makes a noticeable difference with shoes that are close to the right size. Over time, the motion becomes natural and you stop thinking about it.
Combining Methods for the Best Grip
No single trick works perfectly on its own for every shoe. The most reliable approach is layering two or three methods together. A ball-of-foot cushion paired with no-show grip socks, for instance, addresses both the sizing issue and the moisture issue simultaneously. Adding a tongue pad to a shoe that already has a textured insole can be the difference between constant adjusting and forgetting you’re wearing backless shoes at all.
Start with the least invasive option, like grip socks or foot powder, and add inserts only if you still notice slipping. Every foot shape is different, and a solution that works perfectly for a narrow, dry foot may not help someone with wider feet who tends to sweat more. The trial and error is worth it, because once you find the right combination, backless shoes go from frustrating to genuinely comfortable.