As one of its daily deals, 13 Deals is taking preorders for this Standard Parachute Hammock with Built-in Travel Bag for $14.99 with free shipping. (It's also available in Oversized for $7.99 more.) That's $3 under our mention of a similar hammock from last summer and $7 under the lowest total price we could find for a similar item elsewhere. It measures 7x3 feet. It's due to ship on June 1. Deal ends May 6.
Note: It ships in a random color.