Instruction: Answer the given question by extracting information from the supporting document.

Input:
Question: Is this 100% stainless steel or are there some plastic parts?
Document: My new 6oz stainless steel flask (set of 5) arrived last week. The only true way to test flasks is... yes... you guessed it... fill these bad boys up and pound down some liquor like it owes you money.Got my friends together (set of 4) and filled each flask with 100 proof rum. Yeah, play time is over, this test will not be for the faint of heart. Amateurs need not apply.
Amazing for the price! 5 flasks that are stainless steel and they don't leak at all...yet but I'm hoping they will continue to be great flasks.
Best deal ever. Purchased these as gifts along with stainless steel straws. Recipients loved them. the spot is kind of small but overall great product. May order again this year.
Cheap metal is one thing. It's acceptable if my flask's brushed stainless steel isn't smooth (slightly grainy), as it doesn't effect it's use. But these flasks leak. This makes the flask an unusable product. I ordered these in bulk and now must return them.
Since it's stainless steel, I'll assume that's why there's no leftover odor of alcohol. Buy aFunnel for Flask Filling - Stainless Steel with Polished Finishwith it, the lips are very small and it's really difficult to just pour things in from a bottle opening
With five flasks, you can even load one with the foofy flavored stuff your wife likes to drink.But if you're going to party like a pro, you have to equip yourself like a pro. Add a set of these (Norpro Stainless Steel 3-Piece Funnel Set) to your cart before you checkout and put your spillage worries behind you.Now for the cigars...
These are five incredibly solid, nice, stainless steel flasks. They do the trick, especially for the price. Fit nicely in a side pocket of your jeans, in your backpack, wherever really. The only thing that bugged me about them, and it's a really small complaint, is that the "China" sticker on the bottom is impossible to get off entirely. Whatever kind of supernatural adhesive they used to stick it on just won't come off.
I bought this for my boyfriend, as he is always talking about needing a flask. I knew it was coming with 5, and figured it was well worth the price. He can give them away as gifts, or if he looses 1. Well unfortunately he doesnt want it, and to return it i would only get half the price refunded and pay for shipping. Definitely not worth it! So now were stuck with 5, very nice, stainless steel flasks.
So the title of this product is 6 oz. Stainless Steel Hip Flask (Pkg. of 5). I received only one. Sure, it seem like a great product, but I'm about 4 short. So this deserves a terrible rating. Don't buy this. I bought this straight from Amazon using Amazon Prime. Not sure why this happened.Some pictures for your viewing pleasure.[... ]As you can see on the box, it clearly says pkg. of 5.
I ordered this item and expected 5 flasks to take with me to south padre island to follow the ordinance that bans glass containers on the beach. However, when I opened the package I only found one flask with a sticker that said "6oz flask(Pkg of 5)" I missed the return window and am stuck with a really expensive stainless steel flask that can be found at Walmart for much less.
Answer: It appears to be all steel. I do not see any plastic parts. However, I will say that when my husband used it in his cosmetic bag (long travels) there was some leakage.