The Perfect Carry | Spyderco is known for innovative designs and mechanisms. The SwayBack, however, takes the innovation of Spyderco and applies it to a serious throwback to a traditional design. Inspired by jack knives of old and designed by Marcin Slysz, the handle and the blade feature the gentle curves that the traditional is known for, but the thumb hole opener and titanium frame lock Spyderco is known for.