Intex Recreation Kid Swimming Arm Band Floaties (Random Style) $0.98 + Free Prime Shipping

Note: The style you will get may be random. In stock on February 18 25, 2019.
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Grab 2 and you should be eligible for no-rush credits
Similar available at Walmart for $0.98 as well but minimum of 2 + Shipping only ($35+ orders for free ship).