Not sure if this has been posted before, but just in case it has not….
Ursack is offering to upgrade previous model/unapproved Ursacks by sewing again with spectra threads to bring your sack up to Interagency Grizzley Bear Committee approved standard for 4.25 plus postage:
Ursack Retrofit
3 0 0
$4.25
MUST BE ORDERED SEPARATELY–DO NOT INCLUDE RETROFIT WITH ANY OTHER PRODUCT.
Retrofit Ursack S29 AllWhites to IGBC specifications. Available for AllWhites sold before April 2014. What you are buying: 1) the addition of the appropriate number of Spectra thread side seams, and 2) a seam label indicating IGBC certification. AllWhites purchased after April 2014 already meet IGBC standards. Retrofitting is not available for any previous models: if your Ursack is green, beige, or yellow it cannot be retrofitted.

