Designed and tested by Tim Gavin. ; Grippy vulcanized outsole. ; Comfortable elastic tongue strap. ; Highly flexible lasting board. ; Perforated foam for heat reduction. ; Open-cell breathable mesh. ; Soft Latex lined insole. ; Lightweight EVA midsole. Measurements: ; Weight: 15 oz ; Product measurements were taken using size 11.5, width D - Medium. Please note that measurements may vary by size.