TPNet is a lattice of thermoplastic polyurethane which is injected into the outer fabric.
This TPU lattice creates an exoskeleton like structure which stiffness the fabric. TPNet may be used to provide ample lateral ankle support around the heel area of a lightweight boot with minimal weight. TPNet is very durable also serves to protect the underlying fabric from abrasion. Since TPNet is injected into the fabric rather than glued the bond is permanent and will not delaminate. The large holes in the TPNet lattice allow for much better breathability than traditional non-permeable reinforcement layers.