Schwalbe Aerothan tubes. Did someone successfully repair it? No matter what I do, the patch starts to leak the air after 2-3 days with pressure of 6-7 bars : r/bicycling
Schwalbe Aerothan TPU Mountain Bike Tube 29 x 2.15-2.4, 40mm Presta Valve 4026495776608 | eBay