Sleep position is the most reliable starting point for choosing a mattress. It determines where your body needs pressure relief and where it needs support — and getting that balance wrong is the most common reason a mattress feels uncomfortable within the first few weeks. This guide maps each sleep position to the right firmness, then to the right Avocado model.
Quick Start
Sleep Position | Recommended Firmness |
Side | Plush |
Back | Medium |
Stomach | Firm |
Combination | Medium |
Side / lighter sleeper | Ultra Plush |
Side / heavier sleeper (230+ lbs) | Medium |
Back / heavier sleeper | Firm |
Stomach / heavier sleeper | Extra Firm |
Side Sleepers
Recommended firmness: Plush or Ultra Plush
Side sleeping is the most common sleep position. The hips and shoulders extend wider than the rest of the body, so the mattress needs to cushion those contact points while keeping the spine aligned. Too firm a surface concentrates pressure at those points; too soft, and the spine curves out of alignment.
Plush is the most common choice for side sleepers. Ultra Plush is the right option for lighter sleepers or anyone who prioritizes deep pressure relief and the deepest sink.
Recommended models:
Avocado Green Mattress — Plush: Euro-style pillow top with five zones of coil support and 4 inches of GOLS-certified organic latex. The most versatile option for side sleepers across body types.
Avocado Green Mattress — Ultra Plush: Box-top design with indulgent softness. Best for side sleepers who want the deepest contouring, or lighter sleepers who find standard Plush too firm.
Luxury Organic Mattress — Plush or Ultra Plush: A premium step up with additional natural comfort layers and three firmness options: Medium, Plush, and Ultra Plush.
Grand Luxe — Pillowtop Medium Plush or Ultra Plush: The most refined option across the lineup, with six firmness configurations including dedicated pillowtop options.
Vegan Mattress — Plush: Available in Medium or Plush. A good choice for side sleepers who prefer a mattress with no animal-derived materials.
Back Sleepers
Recommended firmness: Medium
Back sleeping requires even support across the full length of the spine, with enough give at the lumbar curve to prevent lower back strain. Medium provides the right balance of support and contouring for most back sleepers. Those who sleep warm or prefer a firmer feel often do well on Firm.
Recommended models:
Avocado Green Mattress — Medium: Our most popular option. Full-body support with responsive organic latex — no memory foam heat retention.
Avocado Green Mattress — Firm: A tight-top surface for back sleepers who prefer a firmer feel or need firmer support due to body weight.
Eco Organic Mattress — Medium: One firmness option (Medium), full finished-product certification stack, and the most accessible price point in the lineup.
Latex Mattress — Medium: Responsive pressure relief without an innerspring system. A good option for back sleepers who prefer an all-latex feel.
Luxury Organic Mattress — Medium: Premium natural comfort layers, with a Medium option for back sleepers seeking a more refined feel.
Stomach Sleepers
Recommended firmness: Firm
Stomach sleeping has the flattest body profile of the three positions. A surface that is too soft allows the hips to sink, arching the lower spine forward and creating strain. Stomach sleepers need a firm, supportive surface that keeps the hips level with the shoulders.
Recommended models:
Avocado Green Mattress — Firm: Tight-top with minimal sink. The standard recommendation for stomach sleepers.
Avocado Green Mattress — Extra Firm: Our firmest option. Best for stomach sleepers who strongly prefer zero sink, or heavier stomach sleepers whose weight compresses a standard Firm surface more than expected.
Combination Sleepers
Recommended firmness: Medium
Combination sleepers shift positions through the night. The mattress needs to respond quickly to movement — a quality natural latex handles better than memory foam, which compresses slowly and can feel restrictive when changing positions. Every Avocado innerspring and latex mattress uses GOLS-certified organic Dunlop latex as its primary support and comfort material.
Medium is the most versatile starting point for combination sleepers. Those who primarily sleep on their side and switch to their back may prefer Plush.
Recommended models:
Avocado Green Mattress — Medium: The most versatile option across positions and body types.
Avocado Green Mattress — Plush: For combination sleepers who primarily side sleep and spend time on their back.
Body Weight
Firmness is relative to body weight. Natural latex compresses in proportion to the load on it, which means the same mattress can feel different depending on the sleeper.
Under 130 lbs: Consider moving one step softer than the position recommendation. A surface that reads as Medium for most people may feel Firm.
130–230 lbs: The position recommendations above are a reliable guide.
Over 230 lbs: Consider moving one step firmer. A Plush surface may compress more than expected; Medium may provide the feel a lighter sleeper would associate with Plush.
See What Firmness Is Right for Me? for the full firmness guide, including the complete model-by-model breakdown.
Children
Ages 3–12: Eco Organic Kids Mattress
The Eco Organic Kids Mattress is Avocado's purpose-built children's mattress. Its 7.5-inch low-profile design is specifically built for bunk beds and trundle beds. Medium firmness is appropriate for children's developing spines — pediatric guidance consistently recommends against overly soft sleep surfaces. Available in Twin, Twin XL, and Full. Carries the full finished-product certification stack: GOTS, OEKO-TEX® Standard 100 Class I, MADE SAFE®, EWG Verified®, GREENGUARD Gold, and UL® Formaldehyde-Free.
Teens: Eco Organic Mattress
Avocado's most accessible price point for an adult mattress, with one firmness option: Medium.
Teens / longer investment horizon: Avocado Green Mattress
The Green Mattress is the right choice when a specific firmness beyond Medium is needed, or when the mattress needs to carry through the teen years and into adulthood. Five firmness options, a 365-night trial, and a warranty of up to 25 years.
For the complete children's guide, including size selection, bunk-and-trundle compatibility, bed frames, and waterproof protection, see Fit Guide: Which Avocado Mattress Is Best for Kids?
More Fit Guides
Need help? Call us at 657-553-3772 or chat online for personalized recommendations from our in-store team.