The High/Low Performance Sled is a solid-weld, heavy-duty 87 pound sled with flat bottom rails that slide smoothly across most surfaces. Variable hand-grip positions allow you to push at heights ranging from 30" to 44". Widely spaced sled harness attachment points provide a smooth, even load while pulling. 14" center post accommodates up to 315 pounds in Olympic weight plates. Weight plates sold separately. Harness attachments are included.