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Amazon.com : Manduka Yoga Recycled Foam Block - Yoga Prop and Accessory, Comfortable Edges, Lightweight, Firm, Non Slip Recycled Foam, Thunder Grey, 9" x 6" x 4" (22.5 x 15 x 10
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Amazon.com : Manduka Yoga Recycled Foam Block - Yoga Prop and Accessory, Comfortable Edges, Lightweight, Firm, Non Slip Recycled Foam, Midnight Blue, 9" x 6" x 4" (22.5 x 15 x 10
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