LaCrosse Air Cushion II insoles in the event you’ve worked your way through the old insoles, just pop these babies in for a fit and feel as good as the day you wisely bought that pair of LaCrosse boots. Perforations provide increased air circulation to keep your feet warm and dry, a layer of charcoal impregnated EVA helps reduce odor, Trim to Fit Size makes it easy to pop into any boot.