Dakine XT Seat windsurf harness is a fully built-out go-to seat harness. This substantial seat harness features a pre-curved inner support structure with featherweight ES foam molded lumbar pad offering plenty of back support and performance. The XT Seat is loaded with features. Details: Marine grade vinyl, push button windsurf spreader bar, freedom shape spreader bar pad, featherweight ES foam molded lumbar pad, pre-curved inner support structure, independent primary and secondary Power Belt, adjustable spreader bar height, eight-point load dispersion system, ultra comfortable, self-tensioning neoprene leg cinch straps, load equalizer patches, two year limited warranty. XS: 28-30'' (71-76cm) SB 8'' (20cm), S: 30-32'' (76-81cm) SB 10'' (25cm), M: 32-34'' (81-86cm) SB 10'' (25cm), L: 34-36'' (86-91cm) SB 10'' (25cm), XL: 36-38'' (91-96cm) SB 12'' (30cm). Material: Vinyl.