Short answer: Derila markets five distinct support zones across its butterfly shape: Back Support Wings, Front Support Wings, Shoulder Arch Release, Central Core, and Arm Support Area.
Why "mapped honestly" is the site's own stated approach
We mapped each one against what independent pillow-fit testing actually shows — a direct, honest framing distinct from simply repeating the brand's own zone claims.
Why the zone concept itself is described as mechanically sensible
The zone-based design is mechanically sensible for its intended sleep positions — a genuine, qualified endorsement of the underlying engineering logic, not a blanket claim.
💡 Worth knowing: these are the brand's own stated zone functions, not independently measured clinical outcomes for each individual zone.
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