1) The 1/4 inch thickness provides the perfect surface to protect your knees and joints while still allowing you to grip the floor for balance poses; Our Research shows that Thicker mats are difficult to hold balance poses and create an unstable unsafe surface; Thicker is Not Better; 2) Our mats are Durable, Lightweight, Odorless and Easy to Care for. 3) This mat has been Oeko-Tex 100 Tested and Approved and are Safe,Non Toxic, Hypoallergenic, No Phthalates, Phenols or PAHS, Free from Latex, Rubber or Silicone. 4) Our Patented PER Mats are made from a new non toxic resin, free of rubber, silicone, latex and does not emit any toxic chemicals or gases. Please note that PER is a patented product and not PVC as many less expensive products. Be careful of Imitations not registered PER; 5) The mat has been successfully tested against harmful substances; Oeko-Tex Standards Class-1- Baby Articles and US FDA approved by SGS; 6) Our Focal Point Icon helps you focus on your poses; It's available in Illuminating colors that Define your Inner Self; 7) Aurorae Yogi Tips are included with each mat; 8) If necessary use the Non Slip Rosin Bag that is included with each mat to absorb any perspiration and increase gripping power; 9) As a small family business we care about all our yogis and do our best to work in the Spirit of Yoga as your Satisfaction is our goal. Please feel free to contact us if you have any issue or need advise; "Illuminate Your Life"