... patent. Curve design instead of previous straight-line design, cantabile and graceful. Small tent:1, Patent technology: design patent, structure ... design: curve design instead of previous straight-line design, cantabile and graceful.9, Self-cleaning function: with self-cleaning coating on ... B1, M2.The side cover is 650.00g/m2, translucent, and top cover is 760.00g/m2, dual-PVC; 100% blackout, to ...