Yoga mats vary in thickness, composition, surface texture, "stickiness" or grip, and weight, as well as price. They are normally around long and have a width of . Yoga mats range in thickness from lightweight 'travel' style at to (standard), and up to for either high performance mats or soft mats for
yoga therapy. Mats are available in many colours and patterns. "Alignment mats" are printed with guides to proper alignment, intended to help practitioners to place their feet the right distance apart and accurately in line with each other. Others are printed with images. Some travel mats can be folded into a small square. The first commercially produced "sticky" Smooth mats provide the most grip, so are suitable for the more energetic styles such as
hot yoga and
Ashtanga (vinyasa) yoga; the trade-off is that they may be less comfortable and appear dirty more quickly. '' gave good grip and was both comfortable and attractive; its
rubber underside made it stable on any surface, but somewhat heavy; a
cork mat provided both good grip and an exceptionally warm surface with a pleasant texture, and the property of being to some degree self-cleaning. The best grip was given by a smooth latex mat; in the review's opinion, its 4 mm thickness both gave enough padding for yin yoga, and the stability for energetic yoga styles. The review noted that a circular mat was at first unfamiliar, but helpful for personal practice of poses such as
Prasārita Pādottānāsana (wide stance forward bend) and sequences where a rectangular mat would have to be turned through 90 degrees at intervals; it was also ideal for demonstrating asanas to a class. ::: * Comfort and weight depend on thickness; people choose thinner mats for portability, or thicker ones for comfort. ::: # Environmental impact of these products depends on how they are grown; impact will be low if they are grown with low usage of pesticides, or in the case of rubber, if from suitably certified forests. == In popular culture ==