
Keeping Contents Cold, One Can at a Time
UllrTec and Frost River are excited to announce a brand new insulated daypack to their product lineup! Introducing the Castle Danger Daypack!
UllrTec was built on the simple foundation that soft-sided coolers, are the coolest. Their lightweight and highly portable nature makes it easy to keep them handy for any moment's notice.
Ullr Coolers is now a sister brand to the makers of waxed canvas and leather softgoods, Frost River. Still based out of Duluth, Minnesota Frost River is excited to continue on with these handcrafted coolers and expand UllrTec into the outdoor gear industry.