I have buttons down my front, but I am no toy. I may be short or long, stiff or soft. I can be plain or patterned, formal or casual. What am I?

How was your day today... What is this game we play... How else do I say?

I vibrantly fluff up your bags and gifts, I anchor your muscles and repair rifts, I float through the air when I catch a breeze, And stop the explosion of your sneeze.

You can hear my thump upon a back, see it upon a wrist. If you touch a vein will feel it too, once this code, I can sense?

Used to carry liquid and solid, As well as some sporting lids.