Therm-a-Rest Universal Camping Mattress Stuff Sack 1.5L (Orange) 3.75" x 9.5" (85 x 241 mm); FITS: Small NeoAir mattresses 2L (Orange) 4.25" x 10" (108 x 254 mm); FITS: Medium, Regular and Women's NeoAir mattresses 3L (Orange) 4.75" x 13" (121 x 330 mm); FITS: Large and LT NeoAir, XS and Small Prolite mattresses 4L (Orange) 5.5" x 13.5" (140 x 343 mm); FITS: Women's and Regular Prolite, Small Prolite Plus and 40th Anniversary mattresses 5L (Orange) 6.25" x 13.5" (159 x 343 mm); FITS: Women's and Regular Prolite Plus and 40th Anniversary mattresses, Large Prolite