I actually bought these three years ago, before a trip to Disneyland, and they're in the same perfect condition they were when I first got them. In the summer, my go-to outfit is a pair of bike shorts with an oversize tee (and when it's a bit chillier, an oversize sweatshirt), so I use these a LOT. They have withstood all that wear (featuring sweat, washes, etc.).

Promising review: "I have owned these for three years and love them even more now! No ripping or tearing, great for yard work, working out, sleeping, housework, going for walks, etc. They are so comfortable and practical. Also, my husband loves these on me; they make the booty look amazing. If you don’t buy these, you will regret it! Very comfortable and they don't fall down. Wore under my Oktoberfest Dirndl so I could have my phone/money in the pockets." —cassie

Get them from Amazon for $14.99+ (available in sizes XS–3XL, three lengths, three fabrics, 18 colors, and packs of two).