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Amazon [amazon.com] has 4-Pk Fit & Fresh Cool Coolers Reusable Slim XL Ice Packs (various colors) for $6.97.
Shipping is free with Prime or on $35+ orders.[list][*]4 Pack[list][*]Ivory (4 Pack) [amazon.com][*]Multi Pastel (4 Pack) [amazon.com][*]Sage (4 Pack) [amazon.com]