Jason Markk's Odor Defense Bundle is an odor kit, not a cleaner or protectant. It pairs two Refresh Sprays: one Fragrance-Free and one Sierra Rain — also sold as the Refresh Duo.

Both sprays use the brand's plant-based deodorizing formula, designed to eliminate odor at the source rather than just cover it up, and the brand says they instantly neutralize odor-causing bacteria. Fragrance-Free gives a scent-free finish; Sierra Rain is the same formula with the brand's crisp, rain-inspired scent. Switch between the two depending on mood or routine. Beyond shoes, the sprays work on hats, apparel, bags, furniture, and as a room freshener.