---
title: "Microcoil (Mini Pocket Springs)"
description: "What microcoils or mini pocket springs are, where they sit in a mattress, and why they inflate the headline spring count."
url: "https://bedguide.co.uk/glossary/microcoil/"
category: "glossary"
primary_entity: "microcoil"
date_published: 2026-10-21
date_modified: 2026-10-21
---

# Microcoil (Mini Pocket Springs)

> Microcoils, or mini pocket springs, are small springs placed in a comfort layer above the main spring unit. They add bounce and airflow to the surface. They also raise the total spring count printed on the label. They are not the main support springs, so read the core spring count and gauge separately.

**Definition.** Microcoils are tiny springs placed in a mattress comfort layer. They change the surface feel and raise the headline spring count.

Also called: mini pocket springs, micro springs, nano springs.

A mattress with a 1,000-spring core and a microcoil layer can be sold as having
several thousand springs. The support unit has not changed.

Ask how many springs are in the core unit for the size you are buying, and what
gauge those springs use.

Full guide: [wire gauge, coil types and
microcoils](/mattresses/wire-gauge-and-coil-types). Also: [how spring count is
marketed](/mattresses/how-spring-count-is-marketed).

---

Source: https://bedguide.co.uk/glossary/microcoil/ · BedGuide — independent UK bed guide; paid links are labelled (see /how-we-make-money/). Facts checked against official sources where possible; see https://bedguide.co.uk/editorial-policy. Report an error: https://bedguide.co.uk/corrections.