Jack Pyke GEN2 Technical Neoprene Dog VestJack Pyke GEN2 Technical Neoprene Dog Vest Traditionally used in making swimsuits the Neoprene is a perfect material for your dog's vest. The Jack Pyke Gen2 Technical Neoprene vest is made using a 5mm Neoprene keeping your dog warm at all times. With a strong nylon zip at the top and hook and loop over fastening it is very easy to put the vest on without stressing the animal. Should you need to handle your dog you can use two grab handles at the top