1. Crown Sporting Goods 3/4-Inch Extra Thick Yoga Mat with No Stick Ridge, Black (Click Link to Check Price on Amazon)
Editor's Rating : 9.5 out of 10
High-density foam mat measures 15 mm (almost 3/4 Inch) thickPerfect for Pilates, Yoga and other floor exercises

2. Yoga Accessories Extra Wide and Extra Long 1/4'' Thick Deluxe Yoga Mat (Dark Teal) (Click Link to Check Price on Amazon)
Editor's Rating : 9.1 out of 10
Largest yoga mat on the marketStretch out on a full 7 feet long by 3 feet wide

3. HemingWeigh 1/2-Inch Extra Thick High Density Exercise Yoga Mat with Carrying Strap (2 Pack Combo) (Click Link to Check Price on Amazon)
Editor's Rating : 9.4 out of 10
71" long 24" wide ensures comfort for people of all shapes and sizes.Ideal for yoga, pilates, stretching and toning workouts, Double-sided, non-slip surface grips the floor to prevent injuries

4. HemingWeigh Extra Thick Foam Exercise Mat (Click Link to Check Price on Amazon)
Editor's Rating : 9.6 out of 10
Over 23 inches wide by 70 inches longIntegrated self-strapping system for easy transport and storage

5. Reehut 1/2-Inch Extra Thick High Density NBR Exercise Yoga Mat for Pilates, Fitness & Workout w/ Carrying Strap (Green) (Click Link to Check Price on Amazon)
Editor's Rating : 9.2 out of 10
71 x 24-Inches wide mat ensures comfort for all-purpose. With high density foam NBR material, the 1/2'' thickness premium mat comfortably cushions spine, hips, knees and elbows on hard floors.With double sided texture surfaces, Reehut premium exercise yoga mat comes with an excellent slip resistant advantage to prevent injuries.