This is a new concept which i am sure it will be the future of wing design, of course a wing spar or two will still be necessary but hollow, light in weight and strong carbon fiber all around. The future of wing airfoil design? 
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It’s a reletivly elegant design.
There is no need for another “wing spar or two”. Because the top and bottom wing skins act in tension and compression, same as an I-beam.
The thin and lightweight wavy portion between simply severates the skins and maintains the designs moment of area and therefore strength. Sheer strength is handled by both skins and the various webs.
This concept can be used with a slight twist, turning the wavy webs so they are aligned the lengthways and vertical like a spar. While maintaining the sine-wave form. Utilizing many spars, more than two. As was used in the Harrier composite wing. Very effective, and able to maintain strength with many holes blown through it.