Mattress Firmness Guide UK
Mattress Firmness Selector Tool
Find your perfect firmness level in 3 simple steps
Choosing the right mattress firmness is critical for sleep quality, spinal alignment, and pressure relief. Sleep Harvester offers 4 firmness options (Soft, Medium Firm, Firm, Very Firm) to match your body weight, sleeping position, and health needs.
Use this guide to find your perfect firmness level in 3 simple steps!
Step 1: What is your body weight?
Under 60kg
Lightweight sleepers
60-90kg
Average weight sleepers
90-120kg
Heavier sleepers
120kg+
Very heavy sleepers
Step 2: What is your primary sleeping position?
Side Sleeper
Most common position
Under 60kg: Soft
60-90kg: Medium Firm
90kg+: Firm
Back Sleeper
Need lumbar support
Under 60kg: Medium Firm
60-90kg: Firm
90kg+: Very Firm
Stomach Sleeper
Prevent hip sagging
Under 60kg: Medium Firm
60-90kg: Firm
90kg+: Very Firm
Combination Sleeper
Change positions often
Best Choice:
Medium Firm (most versatile)
Step 3: Do you have any health conditions?
ðĐš Back Pain / Sciatica
Recommended: Firm or Very Firm for maximum lumbar support
ð Fibromyalgia / Arthritis
Recommended: Soft or Medium Firm for pressure relief
ðĨ Hot Sleeper / Night Sweats
Recommended: Any firmness (all Sleep Harvester hybrids are 30x more breathable)
â No Health Conditions
Recommended: Follow Steps 1 & 2 (body weight + sleeping position)
Sleep Harvester Firmness Options
ðïļ Soft (3-4/10 Firmness)
Best for: Lightweight sleepers (under 60kg), side sleepers, fibromyalgia, arthritis
Feel: Plush contouring, "hugging" sensation, maximum pressure relief at shoulders and hips
â Medium Firm (5-6/10 Firmness) - Most Popular
Best for: Average-weight sleepers (60-90kg), combination sleepers, couples, most people
Feel: Balanced contouring and support, versatile "Goldilocks" firmness, works for most sleepers
ðŠ Firm (7-8/10 Firmness)
Best for: Heavier sleepers (90-120kg), back sleepers, stomach sleepers, back pain sufferers
Feel: Strong support, minimal sinking, "sleeping on top" rather than "in" the mattress
ðïļ Very Firm (8-9/10 Firmness)
Best for: Very heavy sleepers (120kg+), severe back pain, orthopaedic needs, stomach sleepers
Feel: Maximum support, minimal contouring, prevents sagging for heavy bodies
Ready to find your perfect mattress?
Explore our 35+ luxury hybrid mattresses with 4 firmness options, 1000-5000 pocket springs, and Sleep Resonance Foam (30x more breathable). Trusted by British Olympians, developed by Professor John Groeger and Dr Ilyas Ansari.
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