Your Sidekick comes kitted out in no less that 100% pure Thermoplastic Elastometer aka TPE. For those of you unfamiliar with the original Sidekick bag, this super material has it all. Strong, durable, water-resistant, smooth, shiny and altogether great-looking- it’s a synthetic material produced in environmentally friendly way. It’s certainly the material of choice for duos like Batman and Robin. With this improved Sidekick bag we have gone to great lengths to test and put the TPE we use through its paces. We’re confident that you will find the Sidekick material to be stronger, hardwearing and ready for everything!