This whoopie sling is created as an attachment to Hennessy hammocks which hold only 1 or 2 hole attachment part. You should check out the hammock before purchasing because some Hennessy hammocks do not apply this technique. The whoopie sling can be produced with or without the typical rainfly (not for use with the optional Hex fly). If your Hennessy hammock includes a loop of webbing stitched on the end, this standard whoopie sling will work great, but you will require hanging out your rainfly split up of the hammock. This whoopie sling is created from 7/64″ Amsteel Blue in a range of colors and lengths. The regular strength ranking is about 1600 pounds.