Why Your Undies Ride Up and How to Stop It

Quick answer

Undies ride up when the size, cut, or fabric doesn't match your body and movement. Start by checking if the waistband or leg openings are too loose or too tight. Then look at fabric and elastic quality. A well-fitting brief in a breathable, low-stretch fabric with covered elastic usually stays put. If you've tried adjusting and it still rides up, switch to a different cut or size.

What's really happening when your undies ride up

Riding up is friction and gravity at work. As you walk, sit, and stand, your thighs and hips move. If the brief doesn't move with your skin, it bunches. The fabric migrates toward the narrowest part of your body. That's why the back creeps up and the front may shift. The fix isn't just pulling them down. You need to address why they moved in the first place.

Check the size first

Correct underwear size is the most common fix. A waistband that leaves red marks is too tight. It will roll and pull the brief up. A waistband that slides down over your hips is too loose. The brief then twists and rides up as you move. Measure your hips and waist, then compare to the brand's size chart. If you're between sizes, size up for comfort in cotton and Tencel, which have some give but can shrink slightly. Size down only if the brand runs large and you want a snug fit.

Match the cut to your body and outfit

Some cuts ride up more than others. A classic brief with full coverage stays put better than a cheeky or thong cut, especially if you have curvy hips or a fuller bottom. High-leg briefs can also ride up if the leg opening is too high or too loose. If you wear tight trousers or leggings, the fabric of your outerwear can grab the brief and pull it up. In that case, choose a seamless brief or one with a lower leg line. For everyday wear, a regular brief with good coverage is your best bet to prevent wedgies.

Fabric and elastic quality matter more than you think

Natural fibers like organic cotton and Tencel are breathable and soft, but they can stretch out over time. If the elastic loses its snap, the brief won't stay in place. Look for elastic that is covered in fabric or made from natural rubber. That holds better than exposed, thin elastic. Also, check the sewing. A flat seam or a well-encased elastic reduces bulk and friction. If the fabric feels slick, like some synthetics, it may slide against your skin. Tencel is smoother than cotton, so it can feel silkier, but a good fit still keeps it in place.

Simple fixes you can try today

First, try adjusting the waistband so it sits flat on your hips, not above them. If the brief has a tag, make sure it's not causing a lump. Next, check your laundry routine. Hot water and harsh detergent can break down elastic. Wash in cool water and air dry to keep the fit consistent. If the brief is old and stretched, it's time to replace it. Finally, if you're wearing a thong or cheeky cut and it still rides up, consider switching to a full-coverage brief for that outfit.

When to stop adjusting and choose a different option

If you've tried the right size, the right cut, and careful washing, and your undies still ride up, the problem is the design. Some styles simply don't work for every body. That's not a failure on your part. It's a sign to try a different brief. Look for one with a wider gusset, covered elastic, and a fit that matches your shape. If you have a long torso or a short rise, you may need a higher or lower rise. Don't force a style that doesn't work. Your comfort is the priority.

Diagnose your ride-up

• Waistband leaves red marks or rolls down: The brief is too tight. Size up or choose a style with a wider, softer waistband. If it still marks after sizing up, try a different cut.
• Waistband slides over hips: The brief is too loose. Size down or switch to a cut with more coverage and firmer elastic. If it still slides, the fabric may have lost its stretch.
• Fabric bunches between cheeks when walking: The cut is too narrow for your shape. Try a full-coverage brief or one with a wider gusset. If it still bunches, the rise may be wrong for your torso.
• Only happens with certain outfits: Tight outerwear can pull the brief up. Choose a seamless or lower-leg brief for those outfits. If it happens with all outfits, revisit your size.

Products that help solve riding up

• The Very Good Undies - Vintage Peach Tencel - 3 Pack: Made from super-soft and silky premium Lenzing Tencel, with organic cotton and natural rubber elastic, and low-impact pad-print labelling using OEKO TEX inks. The natural rubber elastic and breathable Tencel can reduce friction and help the brief stay in place without digging in.
• Big Knickers - Black Tencel: With good coverage all over, these tencel briefs, unlike our others, also have soft leg elastic to hold them close. The leg elastic adds security so the brief doesn't shift or ride up, especially during movement.
• Regular Briefs - Latte: Legs and waist are encased in a soft, 6mm wide elastic made from tree rubber and organic cotton, unbleached and undyed. The elastic is sewn on the outside of the cotton brief for extra comfort. The wider, covered elastic distributes pressure and reduces rolling, a common cause of riding up.