▎ 摘　　要

NOVELTY - The utility model claims an anti-loosening sleeve, comprising a sleeve and a velcro, the sleeve at least one port of the outer side ring is upwards provided with a velcro, the velcro comprises a hook body; a hair surface body and a locking belt; the hook surface body is adhered on the outer side surface of one port of the sleeve; one end of the locking belt is fixed on the outer side of one port of the sleeve; the hair surface body is adhered on the other end of the locking belt; the hair body can be matched and connected with the hook body for fixing the sleeve. The invention claims an anti-loosening sleeve wear, the sleeve is worn on the arm or sleeve, after adjusting the matching position of the hair body and the hook body according to the elastic degree of the sleeve, the sleeve reaches the best tightness, which can avoid the sleeve for a long time use, the anti-loosening sleeve structure is simple, the anti-loosening effect is good.