Tenjam SPL33112GG 12" Gray Granite SPLASH Series Riser for Shayz In-Pool Lounger for up to 17" Pool Depth 2 per Set. Raising the seat height is not an afterthought in this design. Optional 4", 8", and 12" Risers are designed to integrate into the overall design of Shayz. The user can purchase risers so they can tune Shayz to a height that is within their desired range. Some users want to be submerged, while others want to sit above the water. Plus, when Risers are added they do not change the seating angles of Shayz.