The toecap, toe rubber stitching, and solid rubber outsole improve durability At least 20% of the upper's material is made with recycled polyester The sockliner is produced with the solution dyeing process that reduces water usage by approximately 33% and carbon emissions by approximately 45% compared to the conventional dyeing technology Built for school the CONTEND 8 GS (Grade School) focuses on durability. High wear zones are reinforced with a toecap, toe rubber stitching and a solid rubber outsole to extend the durability for an active school day.