Allbirds Tree Flyer Sneakers Running Shoes BreathWomen's Size 7Great preowned condition with normal signs of wear shown in photos. Designed to put a spring in your step, the women's Allbirds Tree Flyer sneakers are lightweight, responsive and wildly comfortable when you're out for a stroll or running errands around town.Breathable uppers are made from a eucalyptus tree blend material and help keep the air flowing for added comfortCompared to traditional materials like oil-based polyester or nylon, using tree fiber cuts the shoes' carbon footprint in half48% bio-based SwiftFoam™ midsoles are lightweight and bouncy; an innovative low-heat foaming process means the production of these midsoles requires less energyExternal heel counters are made entirely of scraps from the SwiftFoam midsole production processHeel counters and flared, geometric midsoles help keep your feet steadyOutsoles are engineered to flex, helping to smooth out heel-to-toe transitions and increase energy returnNatural rubber tread on outsoles has a zonal traction pattern that gives you a strong foothold on pavementEasy to wash: simply remove the laces and insoles, and place in a delicates bag (a pillowcase works too), then choose a gentle cycle with cold water and mild detergentTo dry, shake out any excess water and set aside to air dry; the shoes will regain their original shape after 1 or 2 wearsDon't put the shoes in the dryer; you can hand wash your laces and insoles separately