I needed some pill bottles for my clumsy, arthritic and weak hands. Having first tried and been disappointed in "Easy Open Vials 5 Pack", I decided to order these on the advice of a friend. They work very well for me--both bottle and screw-off lid are just large enough to grasp easily, and the screw-off lids can be put on gently by me, so they are easy to get off with just a couple turns. The bottle with the blue lid, and the one with the white lid, are my favorites.Customer service at the Nalgene company was also very user-friendly in actually measuring the bottles for me so I could get a more accurate idea of their size. Well pleased, I would order again.