retractable spike systems, retractable cleat systems, and retractable traction systems for incorporation into the midsole or outsole of footwear, boots, or shoes; spike systems, cleat systems, and traction systems for incorporation into the midsole or outsole of footwear, boots, or shoes; spikes, cleats and traction attachments for footwear, boots, or shoes; footwear; boots; shoes; footwear, boots, and shoes with retractable spikes, retractable cleats, or retractable traction attachments; and...