The Kennedy cup should be filled no further than the narrow section so that the liquid doesn't seep out of the straw hole when horizontal.
Kennedy Anti Spill Cup/Drinking Aid for Mobility Issues, Elderly & Less Able
Kennedy Cup Triple Pack | Spill Proof Cup | Cup with Lid | Drinking Aid | Spill Proof Cup with Lid | Adult Drinking Cup | Dementia Cup | No Spill Cup | Anti Spill Cup | Non Spill Cup
Spill Proof Anti Spill Kennedy Cup Drinking Aid
Anti Spill Non Tip Tumbler Non tip Anti Spill Adult Feeding Cup Drinking aid
Spill Senior Tableware Bowl with Suction Base, Anti-Spill and Anti-Shake Assistive Dining Tool for Elderly Practical Self-Feeding Kitchen Utensil(White)
Anti-Displacement and Anti-Spill Bowl Plate for Elderly Large Spill Proof Scoop Bowl, Lightweight and Nursing Tableware(Pink)