Product Details and Features Vstone women running tights elastic pant is easy to adjust the waistband and reach most comfortable degree depend on what your situation. And the stretch fabric provides more freedom of action. Its great air permeability will also promote people away from muggy unwell feeling. Being a basic training pant, people can wear it to exercise, morning jog and sorts of outdoor activity in the hot day, which will keeps the body fresh and cool; meeting a coldish day, a simple legging matches pant well, avoiding heavy cloth adding the burden and being airtight. Expect great air permeability, the maker adopts quick dry technique to improve and perfect practical use. Size Chart Reference 34: waist width from 29.9in to 26.8in, inseam length 19.7in, leg opening 11in, hip width 33.1in 36: waist width from 31.5in to 28.3in, inseam length 19.7in, leg opening 11.4in, hip width 34.6in 38: waist width from 33.1in to 29.9in, inseam length 19.7in, leg opening 11.8in, hip width 36.2in 40: waist width from 34.6in to 31.5in, inseam length 19.7in, leg opening 12.2in, hip width 37.8in According to the wide user feedback, this series size is smaller to some degree. The staff is researching and trying new exact measure, before the challenges have been overcome, please care more about the review and choose a larger size.