Hi. Was wondering if anyone knows where to buy handle extensions for umbrella-type strollers. Dh and I are on the tall side, and have always had to slump over somewhat to push my ds's stroller. I don't have a problem with his Zoomer jogging stroller, only the cheaper umbrella type. DS is 4 1/2 but only weighs about 34 pounds, and we'd think this would be worth the investment for our Disney trip. Thanks in advance.