Got a favorite hat that's just a bit too loose? These EDSRDRUS hat size reducers are the perfect solution! You get 24 pieces total - 12 of the 0.12 inch thick foam tape and 12 of the 0.20 inch thick version, both measuring 4.3 x 0.79 inches. The different thicknesses let you customize the fit perfectly for any hat. The perforated design is genius - it keeps things breathable so your head doesn't get all sweaty and uncomfortable. Made from soft EVA foam that's lightweight and skin-friendly, these reducers have self-adhesive backing so you can just peel and stick them right inside the sweatband of your hat. No sewing required, though you can stitch them in if you want extra security. They work on pretty much any type of headwear - baseball caps, fedoras, cowboy hats, panama hats, you name it. The material sticks well to leather, fabric, cotton, felt, straw - basically whatever your hat is made from. Four tapes are usually enough to reduce your hat size by about 0.79 inches, and with 24 pieces in the pack, you can fix up to six different hats. They provide just enough cushioning to make loose hats fit snugly without feeling bulky or uncomfortable. The gray color blends in discreetly with most hat interiors too. Seriously, if you've got hats you love but rarely wear because they're too big, these simple foam tapes will bring them back into regular rotation. It's such an easy fix that actually works!