Perfect for standard 12 oz drinks (beer, wine, soft drinks) and fits in 16 oz cans/similar bottles. Durable and sealed joints are glue-free, providing good insulation to keep drinks cold and hands warm. Machine washable for easy maintenance. Non-slip, waterproof, drop and friction resistant, suitable for all occasions - indoor parties or daily use, outdoor camping, fishing, barbecues, or lakeside, swimming pool, hiking, beach, etc. Keep beer cold for hours, easy to use, and extend freshness.