Instruction: Output yes if the supporting document can answer the given question. Otherwise, output no.

Input:
Question: my tires are going flat and i don't see any way to inflate them.  any ideas
Document: Bought this on eBay for $70 after shipping (I live in Canada) and saved about $20 from what I might have paid buying it locally at MEC (Canadian REI). Big mistake. As others have written, the tires really stink and one of them was flat! I pulled the tube out and patched it but the tire feels really oily/cheap and the patch kit didn't seem to stick. The air valve is also way too short to actually inflate the tire on the rim.
I received the kayak cart yesterday. I immediately noticed chemical smell at door. I had same chemical smell from item made in China before from Amazon.This smell is so toxic to me nauseate. Product looks good but I had to leave it outside to see how long it takes to disappear chemical smell.I will not put it in my car, no way. other than than price is right. Now I notice tire got flat eve not using. dont buy this.
Had to get a new inner-tube from scooter wheelchair supply store for $15. Moral of  the story is, do not put much air in the tires if you are going to leave them out in the hot sun. By the way the tires still have some odor to them 6 months later (Chinese rubber smell).
And the last , and biggest problem, is the poor quality of the tires ! I can't overstate the extremely bad quality of the tires ! I used the cart over sand to a lake for no more that a half a dozen trips ( for maybe a total of mile and a half at the most over 5 days) and the tires are going flat AND falling apart ( I can rip the tire treads off with two fingers ! ). Pure JUNK !
Do not open inside your home. The tires put off a chemical smell that is not pleasant.Easy to put together and easy to store. Tires attach and detach easily for storage. Cart will fit in sit in kayak. Still trying to discover easiest way to transport kayak on the cart, having difficulty keeping cart from collapsing flat. I purchased for camping trips where I will have to cover dry ground.
If it seems too good to be true, it probably is. I was thrilled to see this cart at such a low price. I purchased two. One for myself and one to give to a kayaking friend for her birthday.They arrived well boxed and I promptly set to work assembling the one that I was going to use. There were no directions accompanying it but it was easy to figure out. All except for the strap. I'll worry about that should I ever get to use this item.
Had similar tire issue described by others. Cart arrived in box with flat tire. Tried to inflate with pump but would not hold air. Returned product.
So, I should of known better than to overlook that fact that all the other horribly reviewed kayak carts looked identical to the one being reviewed here...but, I didn't. This kayak had mostly positive reviews by this seller so I figured I'd give it a shot. Dumb. I'll be d*mned if it doesn't get shipped with a flat tire and a hole in the tube which is so big the tire won't inflate one iota. Obviously, this would have been noticeable when being packaged.
I was not able to inflate the tires they have tubes in the tires but they leaked around the stems
i purchased this and recieved it promptly.The tires smelled bad and took a week before i can use it.The tires were de flated and after several tries did not inflate. i will be returning these back to the seller
Answer: yes