Sleepers Mens Sean Twin Gusset Velor Slippers Review Posted on June 11, 2018November 9, 2018 by LaserMite Mixed, , Twin Gusset Slipper. Extra Comfort Memory Foam Sock. TPR Sole. Upper: Textile, Lining: Textile, Sole: Other. Twin Gusset Slipper. Extra Comfort Memory Foam Sock. TPR Sole. Upper: Textile, Lining: Textile, Sole: Other.