Vulkan Classic Reinforced Back Support provides firm Level 2 support and adjustable compression to reduce unwanted twisting and stabilise the lower back. Reinforced with flexible stays and using Aerotherm neoprene, it combines heat retention with airflow for comfortable day wear. One size fits all. Materials: 80% neoprene, 8% elastic, 7% polyester, 3% fibreglass, 2% nylon. Suitable for activities involving twisting, lifting or bending and for central backache or pain radiating to the buttocks.