Questions about coffee cups
- Can the stainless steel straws still be used in the new coffee cups?
- Are the lids screw on or push on?
- Can the old Tumbler lids fit onto the new Coffee Cups? (vise versa)
- What materials are they made from, what is the lid made from?
- Are the coffee cups the same as the tumblers?
- Will the tumblers be coming back?
- Is the coffee cup leak-proof?