The Slotted 4" Elastic Cummerbund Upgrade is made to work with the USMC Gen three plate carriers (Laser Cut) and others. We use nine inches of 4 inch Berry Complaint nylon elastic which creates two four inch internal pouches. These pouches have loop sewn in place for our internal bungee kits (**2 bungee kits come with purchase) or our large Kydex insert that can be purchased separately (**coming soon). The cummerbund secures with a hook and loop platform and adjust from skinny to fat or in other words one size fits many. Two two and half inch one inch bungee straps are sewn in place to allow for the perfect stretch. Quick release TakTic Buckles used to secure under your cummerbund flap for quick release. Don't buy made in China tactical gear there is a difference!