Zen Active Non-Slip Yoga Mat  Extra Thick 1/4" (7mm)  Environmentally Friendly Exercise Mat w/ Strap  Best Yoga Mat for Home and Travel  Extra Long 72" Memory Foam Is Good For Your Knees And The Earth  100% Money Back Guarantee THICK MEMORY FOAM: We Created A Mat Thickness of 1/4". At An 1/8" These Mats Seem Too Thin And Depending On The Person 1/2" Can Feel Too Thick. A Mat Too Thick Can Create Balance Instability. With The Mat At 1/4" This Will Provide An Ideal Foam Thickness That Provides Comfort and Support Without Feeling Bulky Or Overly Dense, So Your Knees Stay Healthy And Injury Free. TWO SIDED SURFACE: One Side Has A Non Slip Surface That Grips The Floor, And The Other Has Extra Cushion To Protect Your Joints, Increase Flexibility, Relieve Stress, and Improve Overall Fitness On The Most Comfortable Memory Foam Mat That You've Ever Used. ENVIRONMENTALLY FRIENDLY: The ZenActive Non-Slip Yoga Mat is SGS Approved, And Free Of Latex and Metals. It Is Also Free Of Rubber, So You Won't Stink Up The Studio! OVER-THE-SHOULDER CARRYING STRAP: Makes Taking Your Yoga Mat Convenient While You're On The Go. Happy Yogis Agree That The ZenActive Yoga Mat Is The Best That They've Ever Used. 100% MONEY BACK GUARANTEE: If, For Whatever Reason, You Don't Absolutely Love Your Zen Active Yoga Mat, Just Return It, And We'll Refund Every Penny (Or Replace It, If There Is A Problem).