Upper: Durable TPU with air mesh vents in the toe drag area provides breathable durability. Padded air mesh tongue maximizes breathability. Padded heel collar maximizes comfort. Foot Belt technology provides precise, adjustable foot support. The Foot Belt addresses the four foot support criteria: heel support, ankle support, arch/instep support and a tailor made fit. Two independently adjustable straps, one across the midfoot and one around the heel, allow for high precision adjustments and a tailor made fit. The front strap provides powerful instep support while the back strap provides strong heel support.

Midsole: Removable Ortholite® comfort foam hygienic insole. Vibrakill provides comfort and dynamism in a shock absorber specifically engineered for tennis. While maintaining exceptional comfort, the Vibrakill system promotes quicker recovery because of its optimal capacity for energy restitution.

Outsole: Michelin OCS outsole with Michelin High Tech Sole engineering. This innovative formula gives you even greater durability. Designed specifically for the Propulse, this outsole is 40% more resistant to wear and tear than any other shoe on the market today. The new OCS (Optimized Cell System) consists of micro capsules that optimize energy renewal. Seamless circular micro-cells, directly inspired by road racing equipment, optimize traction by having 20% more surface contact and restore energy during the compression-and-release phase.

Exclusive 4-Month Outsole Guarantee (thru Tennis Geeks).