BrickLink - Part 73590c02a : LEGO Hose, Flexible 8.5L with Tabbed Ends (Ends same color as Tube) [Hose] - BrickLink Reference Catalog
Amazon.com: SCS Direct Brick Building Blocks Silicone Playmat - 32" Rollable and Portable Two Sided playmat for Activity Tables - Compatible with and Tight fit with All Major Building Blocks Brands :