Birkenstock unisex-adult Birko Sport Arch Support, Blue, 41 M EU / US Men 8-8.5 M / US Women 10-10.5 M Insect & Pest Repellents Green Aventurine rock representing opportunity

Green Aventurine rock representing opportunity

Outside of Mask The fabric on the outside of the breathable sleep mask is also Bamboo fabric and it defines the look and feel of the mask

Keep some on hand for cold season

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Birkenstock unisex-adult Birko Sport Arch Support, Blue, 41 M EU / US Men 8-8.5 M / US Women 10-10.5 M Insect & Pest Repellents Green Aventurine rock representing opportunityThe BirkoSport two part system combines a BirkoCork? arch support, made from cork and EVA, and a shock absorbing BirkoCell EVA foam top layer. Proper arch support helps distribute impact, absorbing shock and stabilizing the foot with every step. You can wear the layers together or separately to suit your comfort needs.