A containment device that converts between three different configurations or forms and includes a multilayer base. The forms include: 1) a mat or work surface that has a raised lip or edge structure that contains items on the mat or work surface; 2) a small volume bag or flexible container for holding the items inside, where the lip is gathered or compacted, e.g., by a drawstring, to form an annulus from the lip; and 3) a larger-volume, cylindrical-shaped bag, which may be used as a shopping bag. The cylindrical-shaped bag may be stored between the layers of the base when the device is in the mat configuration or the drawstring bag configuration, and the lip may be stored between the layers of the base when the device is in the cylindrical-shaped bag configuration.

An example bag may include a first sidewall, a second sidewall, a top wall, and a bottom wall. The bottom wall may include an outer layer, and the bottom wall may be secured to the first sidewall and the second sidewall by wrapping a fabric forming the first sidewall and the second sidewall over sections of the outer layer. The bag may further include a closure and a pair of straps. The first sidewall and the second sidewall may include endcaps having a first layered structure, the first layered structure may include a compression molded outer layer and an additional structural layer formed of a first foam material, and the endcaps may be more rigid than the first sidewall, the second sidewall, and the top wall. The bottom wall may include a second layered structure formed of a second foam material positioned on the outer layer, and the bottom wall may be more rigid than the first sidewall, the second sidewall, and the top wall.

A containment device that converts between three different configurations or forms and includes a multilayer base. The forms include: 1) a mat or work surface that has a raised lip or edge structure that contains items on the mat or work surface; 2) a small volume bag or flexible container for holding the items inside, where the lip is gathered or compacted, e.g., by a drawstring, to form an annulus from the lip; and 3) a larger-volume, cylindrical-shaped bag, which may be used as a shopping bag. The cylindrical-shaped bag may be stored between the layers of the base when the device is in the mat configuration or the drawstring bag configuration, and the lip may be stored between the layers of the base when the device is in the cylindrical-shaped bag configuration.