Buy Vionic - Avery Pro Slip On Sneakers - Slip-On Sneakers (Black) at THE ICONIC with Free overnight delivery and Free returns! The Avery Pro Slip-On Sneakers from Vionic boast a sleek black-on-black colourway with elasticated gussets ease of wear, set atop the brand's iconic Vio Grip™ sole for unmatched stability. - Smooth leather upper - Slip-on, low-profile design - Black-on-black colourway - Elasticated gussets- Moulded footbed - Vio Grip™ sole Upper: LeatherLining: Textile & Synthetic Sole: Synthetic