ASICS Men's Gel-Nitrofuze TR Cross-Trainer Shoe 100% Textile and synthetic Imported Rubber sole Shaft measures approximately Low-Top" from arch Rearfoot gel cushioning system: attenuates shock during impact phase and allows for a smooth transition to midstance. Solyte midsole material: a lighter weight midsole compound than Asics' standard eva and speva. Also features enhanced cushioning and durability. Seamless construction: the use of seamless materials reduces the potential for irritation and friction caused by traditional stitches and seams.