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

Input:
Question: are they anti-shock?
Document: took these on a 3 day hike on the AT. really great experience with these poles. I'm a pretty big guy at 6-1 and 250 lbs and they supported me up hills, over streams, and down rocks. made the whole hike a lot easier. good buy in my opinion and will continue to use them.
these were great for hiking this summer, now will use the snow shoeing with the first snow. Very happy with them.
the poles feel very sturdy and well made but the straps could be more comfortable on longer steep hikes. I use the straps a lot so I don't need to grip the poles as tightly.
purchased as a gift for my husband . He was happy with the product and said that they were high quality trekking poles and easy to use and store
i thought poles for hiking was dumb until my wife got me a set .going uphill is way easier thanks to these poles i don't notice a lot of help going down.
easy to use and very sturdy the click lock was easy to do and keeps it tight wife likes it
cannot go wrong for the price&#8230; I love the quick release and the stability of these poles&#8230; instead of paying much more these work just as good..
bought these on sale direct from [...] ($35ish?) seem to be good poles, they take my weight (210lb, 5'10"). the larger top facilitates leaning on them with arms to rest while standing. not too heavy. a little ugly. biggest complaint: the simplest feet wore through in just a couple walks on pavement, trying replacing them with these:B002TJW1D4B0032IPKRU
Went hiking in the mountains yesterday, worked great!!! Didn't realize how much I would use these poles! Glad I made the investment.
Well made,locks securely and the grips seem to be adequate. I haven't put too many miles on them yet but for the price they're a good investment.
Answer: no