Outdoor Workout Towel: Bagail Basics Microfibre Camping Towel Bagail Basics's Microfibre Camping Towel ($9 to $22) is made for outdoor workouts. Each towel — available in sizes XX-Small (12 by 24 inches) to XXX-Large (40 by 80 inches) — has a zipper pocket so you can tuck your valuables away in your towel while you workout. Plus, the it comes with a carrying case that's equipped with a zipper and handle. Image Source: amazon.com Microfibre Camping Towel $9 from amazon.com Buy Now