Instruction: Extract information from the supporting document to answer the given question.

Input:
Question: Is it comfortable to sit on?Our toddler likes to alternate between standing and sitting. Would this be comfortable to sit on?
Document: It just smelled like vinyl, nothing strong. You will have to pull it up after your shower or bleach it/clean it once a week to prevent mold from forming under it. I love this mat! My daughter of a year and a half also likes standing and sitting on it when she is in the shower. No slipping anymore!
This product actually works well for me. There's no slipping and it's also comfortable when sitting for baths. I think you would enjoy this product and the price was reasonable.
Bought this for my 2 year old. She loves to play in the tub, and I wanted something to stop her from slipping. This does the job. She loves to sit and push the bubbles on the mat, and she likes the texture of how it feels when she sits or stands on it. The smell to me seems no stronger than any mat you would purchase. My wife says its strong to her, but to each their own.
received blue bath mat and couldn't be happier. Fits the top perfectly. Very comfortable to stand and sit  on. Nice to know it is machine washable. Would recommend it to  any one.
This mat was just what I expected it to be. Sticks easily and is the perfect length for our tub. My only complaint is that right now it has a pretty strong odor. Hopefully this smell will go away as time goes by. It feels good on the feet and my toddler enjoys sitting on it during her bath. I would definitely buy it again.
It does the job. It sticks nicely to the tub. My kids sit on it during bathtime and they find it comfortable. As past reviewers have said, it is a bit smelly....  but the smell does go away and it wasn't too bad.
I gave this product 5 stars because it appears to be made of high quality materials. The mat is wide enough to cover a large portion of the tub and after pressing out the bubbles, it stays in place. It is comfortable to sit on and does not slip out of place.
Bought this to use when giving my toddler a bath. It covers the entire bottom of the tub so wherever she chooses to play, she's not sitting on the hard tub bottom. It's sticks well to the bottom of the tub and then when not in use, I stick it to the shower wall to dry. Love this mat!I didn't have any issues with the smell. I never noticed it.
I love this product and was not expecting to be so excited about a bath mat. I got it to keep my toddler from slipping around too much while playing the the bath, and it's perfect. It's long enough to cover the whole tub and, though non-skid, is still comfortable against his skin, unlike many other bath mats I've experienced. It's good for grown-ups, too! I've not yet tried to clean it in the washing machine but am excited about that feature. Highly recommended.
I like this bath mat a lot. We bought it because my daughter graduated from her blow-up ducky tub to sitting in the bath tub like a big girl. We wanted something big enough to cover the entire tub floor, and something that would stay put once you stuck it on there. It smelled like plastic the first day I opened it, but it went away after a day. It was not an issue for me like some other stated.
Answer: Honestly, a bath mat is NEVER safe to stand on for a child, in particular. Once soap gets onto ANYTHING, it will be slippery.  I do know what you mean though about toddlers wanting to alternate between standing and sitting.  As far as comfortable to sit on, it's not soft like a pillow, of course.  It's sole purpose is to make the tub bottom LESS dangerous and slippery.  And, as far as others saying about the gaseous odor that never goes away, I didn't find tht at all. I bought mine when the weather was still nice so I hung it outside for maybe 3 days.  It was fine then.  Anything that's vinyl will emit an odor for a while, as happens even with shower curtains, right? But, it's not like you're bathing your child in a chemical dump site. It's safe as far a chemicals, I feel, and a child can still slip on it if standing and playing around BUT, it is still safer than if the child were standing on the tub bottom with nothing on it.  Every little bit helps.  I bought mine for TWIN toddlers! :-)