US Patent 11154127 Clamshell pack

A pack enables objects stored therein to be accessed easily and efficiently. The pack includes a rear portion including one or more first sidewalls, and a front portion including one or more second sidewalls. Each first sidewall has a generally convex configuration, and each second sidewall has a generally concave configuration that complements the convex configuration of the first sidewalls. The second sidewalls are extendable generally along the first sidewalls to couple the front portion to the rear portion.