When it comes to thin strap bra, most people think of a supportive, pretty option that will play nicely with their favorite spaghetti-strap top or dress. But the truth is that even with the best intentions, these bras can leave uncomfortable red indentations on your shoulders. These marks are caused when your straps are doing more work than they should, as opposed to just holding the bra in place. Luckily, these indentations can be easily avoided with a few simple tips.

1. Make sure your band is tight enough.

One of the most common problems with thin strap bras is that the band is too loose. The band provides 80% of the support in a bra, so if it is too loose, the straps have to do more work than they should and end up digging into your shoulders, leaving painful red marks. To test if your band is snug enough, you can run two fingers up the back and side of your bra to see how it feels. If you can’t get your fingers underneath at all, the band is too loose.

2. Check that your cups are full and centered.

Another issue that can cause painful red marks on your shoulder is a cup that’s too small, causing the breast tissue to spill out into the straps. To test if your cups are fully centered and filled, you can try placing your hands under the cup to see how much space there is. If your breasts spill out into the cups or if you see gaps, then the cup is too big.

3. If your bra straps dig into your shoulders, you probably have a bigger band size.

When it comes to bras, there are many factors that can influence fit and comfort, but the most important is your band size. If your band is too large, it won’t provide any support and will simply slip around on your shoulders, putting all the weight on your straps. To check if your band is too big, you can try putting your arms over your head and seeing how the bra moves up or down in the front or back. If it moves up, it’s too loose and needs to be tightened up.

To help you find the perfect thin strap bra for you, we’ve rounded up 10 of our favorites. Whether you’re looking for a strapless option, a cute strappy design or something more classic, we’ve got you covered. Be sure to wash your bras with cold water and hang dry them so you don’t add any additional heat that can break down the fibers and cause them to stretch out over time. With the right bra, you can rock those strappy, thin-strapped outfits with confidence!