You need a Firm mattress. If the bed is too soft, your hips will sink, causing your lower back to arch painfully.
Look for a Medium-Firm feel (around a 6/10 on the firmness scale). It supports the natural "S-curve" of your spine without letting your hips sink too far. what mattress should i buy for lower back pain
You need a Medium or Medium-Plush feel. Choose a mattress with thicker comfort layers (memory foam or pillow-top) to relieve pressure on your shoulders and hips. You need a Firm mattress
Based on reviews from experts at the Sleep Foundation and Mattress Nerd , these are the top-rated models for back pain: your hips will sink
Latex vs Hybrid: Choosing the Best Mattress for Back Pain - sleep365