Under Armour Kids Mens UA Ignite Velocity IV SL (Little Kid/Big Kid) Synthetic Talk about cushion and cool comfort! The Under Armour&reg; Kids UA Ignite Velocity IV SL sandal is like walking on pillows all day long. Synthetic upper. Hook-and-loop adjustable strap with foam lining. Perforations on side for added breathability. Contours on footbed provides additional cushioning. Sculpted EVA outsole provides lightweight comfort. Imported. Measurements: Weight: 3 oz Product measurements were taken using size 2 Little Kid, width M. Please note that measurements may vary by size.