Sealy Baby Posture Perfect Breathable Crib Mattress, GREENGUARD Gold Certified, Made in USA, 2 Stage Hybrid Memory Foam & 150 Premium Coils, Toddler Bed Fit, Safety & Quality Tested, 52x28"

after reading this thread, and doing a little research, I wanted to share the best combo I found. I opted for this crib mattress: https://www.amazon.com/dp/B07XPLC6RJ?ref=ppx_yo2ov_dt_b_fed_asin_title plus this topper amazon.com/dp/B0F2FZFLJB?ref=ppx_yo2ov_dt_b_fed_asin_title for my 50 - 60 lb senior dog with joint issues. She loves it:) Much less expensive and super supportive