Amazon.com offers Prime members the Rio Beach Portable Sun Shelter, model no. BH201-88, for $19.99 with free shipping. (Non-members can spend $25 or more to qualify for free shipping; otherwise, shipping costs $5.58.) That's tied with our mention from ten days ago and the lowest total price we could find now by $4. (Most merchants charge $40 or more.) This freestanding portable sun shelter purports to provide SPF 50 sun protection and features two interior pockets and two exterior zip mesh windows.

BUY NOW: $20 + free shipping via Prime at Amazon