Woot! has the Fruit of the Loom Men's Tag Free Crew T-Shirts for $20 with free shipping with Prime. Features 100% cotton, except heathers, 90% cotton / 10% polyester.
Amazon has the Under Armour Men's Hybrid Performance Workout Pants (Black (001)/Pitch Gray) for $35 with free shipping. Has excellent Amazon Reviews.
Academy Sports sells it for the same price.
Amazon has the 15-Pack Fruit of the Loom Men's Tag-Free Cotton Briefs (White) for $13 with free shipping on $25+ or with Prime. List price: $23. 100% cotton briefs have a "full coverage fit" and pinch-free leg openings. #1 Best Seller in Men's Underwear Briefs.
Has excellent Amazon Reviews.