We have a double stoller but DS is now too big for it, so we're bringing a single for DD and I want to rent one some days for DS. DH wants me to find a single for him to take with us, but he's 60 pounds and 6. I can only find jogging strollers that will accomodate. Not happening. He can walk mostly, but I know he'll get tired later in the day. Anyway, the rentals look really uncomfortable. How to make it comfy? Has anyone made a cushion or something to take or will a towel do just fine.