Twill

Twill is a type of fabric weaving style. It is made by passing the weft thread over one or more warp threads then under two or more warp threads and so on. Twill weave is often designated as a fraction, such as 2⁄1 (two up, one down); 3⁄1 (three up, one down). The fewer interlacings in twills as compared to other weaves allow the yarns to move more freely, and therefore they are softer and more pliable, and drape better than plain-weave textiles. Twills also recover from creasing better than plain-weave fabrics do. When there are fewer interlacings, the yarns can be packed closer together to produce high-count fabrics.

Waterproof

Waterproof refers to that water can’t penetrate through the fabric back side in specific pressure. Generally, it will coat PU or PVC coating on the chemical fabric backside to make the waterproof function. Some fabric will laminate Polytetrafluoroethylene (PTFE) membrance to make it waterproof. This function usually won’t invalid by washing and long-term use.

Water repellent (WR)

Water repellent (WR), also known as water resistant. By adding auxiliaries to make the surface of the fabric has a very low surface tension. After the water drops fall, the tension on the surface of the fabric is very large, which promotes the shrinkage of the surface of the water droplets. It is spherical and cannot be spread out, so it quickly slips off the fabric in the form of water droplets. But after multiple washings, the effect of water repellent will decrease.