Wilderness Systems Oval Orbix Hatch SUBTYP1_Pants Our Women's Merino 250 Baselayer 480996 Our Women's Merino 250 Baselayer Bottoms are designed to keep you doing what you love while staying comfortable helping keep your body temperature regulated and wrapping you in unbelievable Merino wool softness The hollow core fibers trap heat and offer extraordinary insulating properties The Wilderness Systems Replacement Oval Orbix Hatch is the manufacturer's replacement for Wilderness Systems kayaks that were manufactured with the Orbix hatch model years 2015 through the present This hatch is NOT a direct replacement for models that did not originally come with the Orbix Hatch