The Sack Challenge is a simple challenge to really learn your molds and gain consistency, along with maybe a little bit of money saving. (But who are we kidding, you will still buy plastic)
This will run in a quarterly cycle of 1 month to modify and adjust your back, and 2 months of lockin. We started in October being our change month, and November/December being lock months. The next open period is January, and the next lock is February/March.
Open Bag Month | Lock-in Months |
---|---|
January | February, March |
April | May, June |