Back on Track Coperta da esterno Obsidian 150g con collo staccabile Nerothe neck piece is attached to the blanket with Velcro. "Obsidian" 0 gram outdoor blanket The "Obsidian" 0 gram outdoor rain blanket is an adjustable, multifunctional blanket that is highly suitable for various weather conditions the blanket can be worn alone or together with another blanket. You can easily attach the Back on Track "Rhyolite" liners to the "Obsidian" blanket. The blanket comes with a matching neck piece that attaches to the blanket