Walmart has the 7 Hanes Men's Fresh IQ Tagless Tank Tops (White) for $13 with free in-store pickup or $5.99 shipping to home. List price: $17. They're available in sizes S to XL.
Ends 7/20. Macys has the Miken Women's Racerback Cover-Up Dress (White or Black) for $14 with free in-store pickup or $10.95 shipping to home. Available in most sizes from XS to XL.
Amazon has the Little Beauty Women's Athletic Shorts (several colors) for $12.99 - $4.55 off with coupon shortDN35 = $8.44 with free shipping on $25+ or with Prime. These women booty lounge short fold over, or regular waist shorts come with pull on closure, and a midrise drawstring waistband that you can adjust and will stay in place. Available in size S to XL.
Has above average Amazon Reviews.