30 oz All Night Double Wall Party Cup (Black)

I really like this cup i use it for my ice water at night i tend to sip from it all night long and the ice lasts better than any other cup ive had i have been looking for a place to get an extra one because i got this one on clearance last year and just now found it here on amazon and ill need to get several more. Well i was going to get some of these cups but i tried a Artic stainless steel 30oz. and in the morning the ice had melted a little only it was just a block of ice by then so ive changed brands i got the artic for $12 on sale with prime shipping if the shipping on this cup was different i would still get it i do like them a lot but stainless steel wont ever crack if its droped which the other hasn't yet but the price for me was the same in the end so it was all the same but i just wanted others to know i still recomend this cup, however there has been somthing yhat has coutht my eye and i thought you should know.