while this spray just uses a pump system

Made of fiber glass and mounted on a handsome wooden stand

Height adjustable

it's easy to use and transport

Aetrex Men's Compete Posted Orthotics With Metatarsal Support for Flat & Low Arches Leukotape while this spray just usesDesigned specifically for comfort, support and weight redistribution in athletic, walking and comfort footwear. These tri density orthotics feature a Copper Guard top cover and a layer of Pro Shox for superior cushioning and shock absorption. Copper Guard's high tech polyester fibers wick moisture away from the foot and provide a cool, friction free surface to prevent blisters and other foot problems. Recommended for: Metatarsalgia Shock Absorption