These towels are the perfect size and super absorbent. I carry one in my putter pocket and keep an extra in my bag. The zip top plastic they come in makes a great waterproof bag for your phone, wallet, etc.
This towel is excellent, it is absorbent and keeps working throughout the round. It comes with a little bag to keep it dry, which is nice for those rare tournament rounds where you are playing in a downpour. I really wish it just had a hole or clip though so I could hang it on my bag for those slightly damp rounds where you need your towel a lot, but its safe to hang from your bag.