Choosing the right fabric for your riding dicipline and the weather or temperatures that you'll be riding in are in some ways more important than the style you choose. This is why we're glad to see that you are reading up on the fabrics we offer. This will help you make better choices! All of the fabrics listed here are 4-way stretch and were selected with great care to excel in their chosen catagory to be the absolute best choice in the world for its intended purpose, so feel confident in choosing from any of these selections. However, one particular fabric will be more right for your intended purpose than the others, so pay attention to how each one would suit your purpose best. Spandura (Cordura/Lycra blend) (Styles: Endurance Racing Tights & Ultimates) Comes in 2 weights: "Light Weight" Spandura: The "best choice" for hot,warm, or cool climates. It breathes extremely well and dries quickly. This wonderful fabric was designed for outer wear use in extreme sports like rock climbing and is very resistent to tears or snags. Spandura is made by the same folks that produce Coolmax. The manufacturers' intended use for Coolmax was for undergarments, however, and therefore doesn't meet our standards for durability as an outer garment. Spandura does however keep you just as cool. It's also the fabric used for NFL football jerseys. "Winter Mid-weight" Spandura: The "best choice" for cool to cold weather, depending on how active the ride. This is the fabric choice for winter mountaineering. It is a bit heavier than the "Light Weight", but still very supple, with a downy knap on the inside. It also has all the same tear and snag resistent qualities that our other Spandura weights have. ************************************************************************************** Nylon/Lycra (Styles: Trekkers and Shorts) A "good choice" for warm to hot climates. It breathes and wears well and dries quickly, which makes it easy care with no shrinkage. If worn under another outer garment (as long johns) it's great in colder weather as well. For years it has been the standard for cool, comfortable and stylish active wear and comes in a variety of colors. Cotton (Styles: Cotton Knee Patch and Full Seat Tights) A "good choice" for warm to hot climates in the arena or short rides. Cotton is an ancient garment staple traditionally a warm weather fabric with long accepted durability and care features. Our cotton is of premium grade, a yarn dyed 12 oz cotton/Lycra blend (90% cotton and 10% Lycra) to give your tights the best color fastness, stretch memory, and wear available. Clarino: The top synthetic suede in the world is used for our knee patches and full seats. It wears well, is easy care wash and dry, and is color fast. Thank you for taking the time to learn about the fabrics that really make the difference. Now have fun with style! Need Help? Call our equine experts at 800 260-7072 or email:info@saddlebums.com