Women's UA Charged Surge 4 Tennis Shoes Run the extra mile and embrace the aisle wearing the Under Armour® Charged Surge 4. Crafted from polyester upper, lining and rubber footbed, this pair of lightweight shoes features round toe shape, lace-up closure and low-top silhouette. With enhanced cushioning around ankle collar for superior comfort, these shoes come with deluxe comfort system sock liner that molds to your foot for ultimate step-in comfort. Charged Cushioning® midsole provides all day comfort with responsiveness & durability. Rubber outsole. These are in good used condition with minimal signs of wear.