I have several colors and even duplicates in some colors and wear these tanks tops with everything, year round. They are easy to care for, feel great and hold up well.
There is quite a bit of stretch to these which is why I think the waist can ride up, so you might want to consider sizing up. Other than that, I highly recommend.
This tank is great! I purchased it in 2 different colors and will purchase more when I need them. The length is long and does not ride up. I also like the wider straps that conceal my bra straps. This is a definite staple for your wardrobe!