These containers work great! Wash & place slightly damp paper towels in between layers of greens.
Rubbermaid FreshWorks Produce Saver Food Storage Container, Large Square, 11.1 Cup, Green 1996984 https://www.amazon.com/dp/B074V24NS3/ref=cm_sw_r_cp_api_i_1OnQCbFGYZCQC