Charles Goodyear's development of vulcanised rubber enabled the invention of the elastic gusset boot. Open-crotch pantyhose, sometimes known as crotchless pantyhose, do not have a gusset. In contrast, Faroese lace shawls are knitted bottom up and contain a centre back gusset. The gusset plate is bolted to the column and welded to the beam. The Edge uniforms retain the underarm gusset "victory stripes" of their predecessors. Some varieties have a bottom gusset and are known as Stand-Up Pouches. The most distinctive trait of Faroese lace shawls is the centre-back gusset shaping. Spruce and plywood ribs were connected with gusset joints. The Original features a specially designed, diamond-shaped stitchless gusset made of organic cotton. Common bearing type connections include&colon; shear tabs, beam supports, gusset plates in trusses. Most trusses use gusset plates to connect intersecting elements. Gusset plate is a plate for connecting beams and girders to columns. Gusset plates are used to connect beams and columns together or to connect truss members. The copper and aluminum gusset plates also provide a more attractive finish for exposed structures. Gusset plates are relatively flexible and unable to transfer bending moments.