Feature: 1. The use of high-elastic knitted fabric with moisture wicking function, its yarn weave tightness is good, has good stretch elasticity, durable and wear-resistant. 2. Thermal retention - wraps ears up easily for more warm, easy to wear, functional design fit for all adults, sun-uv protection in summer and keep warm under hat in winter. 3. Double-layer fabric, digital printing, using exclusive multi-color printing technology, superimposed and printed patterns on the fabric of one color. This kind of technology has relatively high design requirements and digital printing technology, so the result is more design and taste. 4. It is suitable for running above 0 degree and keeping warm and other environments. Please note: because there is no fluff on both sides, it will not play a very warm and cold-proof effect in cold weather, but it will be very fashionable for the usual warmth and wear. 5. One size fits most, suitable for men and women.