The details did not explain. There are two (one larger) inflatable pillows that you blow up then insert into the two sleeves at the top and bottom of the hammock. This is excellent if you have limited storage space and need to deflate to transport. I may try inserting shortened noodles. It is lovely for floating while partially submerged so as not to get too hot. Stable enough I can read while floating. It is a little short for tall people. I am 5'7" and I wouldn't want it ant shorter.
This float was very comfortable. It took a little time to inflate but was not too difficult. It just makes the swimming pool more colorful and fun!!!
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