A/T TRAINER boots by 5.11 The Trainer model is ideal for training in a lighter environment, whether outdoors or in the gym. The polyurethane thermoplastic surface alternates with mesh for breathability and a stronger, solid material. Lightness, flexibility, comfort and endurance make the A/T Trainer the ideal partner for cross-fit, running or strength training. PLATFORM A.T.L.A.S. Technology A.T.L.A.S. is a carefully thought out platform of shoes with many features that have a single purpose - to maximize your performance. The sole pattern ensures that your foot stays exactly where you want it. 5.11 Echo Foam is a polyurethane layer that improves response speed. The Ortholite insole absorbs shocks and the antimicrobial composition prevents odors. FEATURES of a/t trainer boots low shoes suitable for training 5.11 Echo Foam improves response the Ortholite insole absorbs shocks surface made of nylon and polyurethane thermoplastic