KLINE features layered paper - you can get translucent vellum, grid paper, watercolor sheets, or just alternating ruled and blank pages. There are cotton hardcovers, made with renewable materials. Bindings are durable, featuring both glue and ribbon reenforced page binding.
There are three different KLINE models in the lineup - the 1.x, the Slice, and the Core, each available as gridded, ruled, and blank. All models have a silk page marker, a vertical back pocket, and an elastic closure band. Overall, these look pretty awesome.
Pledges start at $25. Funding ends Sunday, June 2nd, 2013. If you're curious, check out the Kickstarter page for all the details about each model.