Blankets or throws can be made of natural or synthetic fibers. Synthetic fiber blankets are hypoallergenic and have added properties for warmth, comfort, softness, durability, etc. Blankets of acrylic are lightweight, soft, warm, and have a wool-like feel. Acrylic blankets can also mimic other fibers such as cotton, and can be a less expensive alternative to cashmere. Microfiber makes for soft, fine fabric which retains heat and dries quickly, increasing the comfort and durability of the blanket or throw blanket. Microfiber wicks moisture away from the body, resulting in a blanket which stays dry. A microfiber throw blanket can be very elastic as well. Polyester is one microfiber which gives blankets superior wrinkle resistance, durability, and color retention compared to natural fiber blankets. Cotton blankets are lighter than wool and are used as loosely woven thermal blankets which grant comfort in hot environments. Rayon is a semi-synthetic and has comfort similar to natural fibers. Rayon blankets or throw blankets imitate the feel and texture of silk, wool, and cotton. Blankets of rayon are soft, smooth, and absorbent, yet do not insulate as much, making them ideal for summer or hot climates. Synthetic fleece, often called ‘fleece’, is soft synthetic fiber which is meant as an alternative to wool. A fleece throw or fleece blanket is warmer and lighter than wool, repels water, and dries quickly. However, it is not windproof, and does not absorb moisture. Do not tumble dry, iron, or wash your fleece throw or blanket at high temperatures. Wool is resistant to flame and static electricity. The quality of a wool blanket is determined by fiber diameter, with smaller diameters softer, called Merino wool. Microplush is a single-sided fabric with one side covered in fine, velvety acrylic fibers which make the blanket very soft and warm, and also easy to wash. Microplush throws and blankets can be like chenille in fineness. Vellux is nylon fibers bonded to foam, which creates a very plush, soft blanket of greater thickness. Blankets and throws can be filled with down as well, which is a natural and warm fiber which has loft or thickness for added comfort.