adidas outdoor Girl's Boat Purple Casual Sneakers 3.5 M Mesh Half ballerina flat, half boat shoe with a girly summer vibe This easy slip-on has an elastic strap across the vamp, breathable mesh upper and grippy Traxion outsole Upper: open mesh nylon for best breathability and quick drying Upper: slip-on construction with an elastic strap for a snug fit and easy on and off Outsole: exceptional Traxion in wet and slippery conditions