<p>The original inspiration for the GEL-SD LYTE™ shoes was inspired by an egg. Consisting of a shell and an inner membrane, the primary focus for the design was to protect the foot from outside environments.</p><p>The concept of the shell is implicated onto the shoe's midsole and upper mold. This mold was initially formulated for both cushioning and a supportive foothold. </p><p>The progressive tooling system is updated with FLYTEFOAM® PROPEL cushioning. This material helps create better comfort and a more energized feel underfoot.</p>