My partner 6'2" 200 lbs and myself 5'6" 150 lbs each had our own Manta 28. We hiked from the North Rim of the Grand Canyon, with 2 days in the lower valley hiking, and hiking out to the South Rim. We started with 42 degrees F and then ended at 101 degrees at the bottom of the canyon. All our clothing was light weight and with the 3L hydration pack the Manta had enough room for all of our supplies, clothes, and gear. The multiple adjustments the pack provides was perfect for us. We are going on 2 years with them and continue to be impressed at how great they still perform, from Mt Shasta, Mt San Jacinto , Yosemite, Grand Canyon, Joshua Tree and to our next trip to Havasu Falls.
Palm Springs, CA