The design and material of the REFLEX Alpha1 make this therrmoformed vest a unique CE approved personal flotation device. EVA foam is located around the breast, giving it a soft, flexible second-skin feeling without the standard inconveniences of stiff nylon-stitched vests. Yet, the Reflex Alpha 1 offers the best of both worlds, with neoprene lining, spanflex side boat panels, side zip boat fasteners and adjustable straps you would expect to find in any high-quality vest.