Independent springs
Adaptive head support.
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Side sleepers need more height to keep the neck level. Back sleepers need medium height — enough to support without pushing the head forward. Stomach sleepers generally need less. The adjustable options (Spacepillow, SMART) let you fine-tune height regardless of position.
ErgoCert is an independent ergonomic assessment issued by the Institute of Ergonomics Certification in Italy. It evaluates pillows for head-neck alignment, biomechanical compliance, and — at the 5-star level — real-world user experience testing. It is a third-party verification, not a self-declaration.
A memory foam pillow contours to your head but retains heat and can feel warm through the night. A spring pillow adapts through independent pocket springs and maintains air channels that dissipate heat. The Viscospring Signature combines both — a memory foam layer on top of a spring core — which addresses the heat problem of solid foam.
Fiber and foam pillows typically lose their shape after 1–3 years. Spring-core pillows maintain their structure significantly longer because the springs do not deform under normal use. A reasonable lifespan for a quality spring pillow is 5–8 years with normal care.
An adjustable pillow lets you add or remove fill to change its height and feel. The Spacepillow uses a fiber fill you can pull out through the zipper. The SMART Pillow uses four separate inserts you combine or remove. Both let you match the pillow to your exact preference rather than choosing a fixed firmness.
OEKO-TEX Standard 100 means every component in the pillow — fill, springs, cover — has been independently tested for harmful substances. It is a certificate issued by an independent testing body, not a brand claim.
It depends on the construction. Pillows with open-cell microgel or internal air channels (spring structure, perforations) do maintain a lower temperature than dense closed-cell foam. The BlueCell and Viscospring Signature both have structural reasons for their temperature performance — not just a marketing label.