Urecel Quickdry® Foam. Wide, open cells provide optimal drainage and circulate air. Urecel QuickDry® is the advanced, high-performance foam designed specifically for outdoor cushions. Its the best you can buy. Urecel QuickDry is produced by a sophisticated process called Hydro-Blast Reticulation. This is what gives Urecel QuickDry® its unique porous open-cell structure and why it completely outperforms closed-cell, non-reticulated, regular foams. The large, open pores in Urecel QuickDry® allow water to drain very rapidly and fresh air to circulate freely and continuously.