These Women's OP Comfort Beach Thongs are $9.88 at Walmart.com. This saves you $3 off the regular price, and it's the lowest price we found on any similar ones. They have a memory foam insole, breathable straps, and come in 4 colors. Plus, they're highly reviewed, with 65 of the 75 reviewers giving them a 4 or 5 star rating. See more colors here. Spend $50 for free shipping or select free pickup at your local store (otherwise it adds $4.95). Sales tax is charged in most states.