## Spring System – Explained in a U-Shaped Way (For Professional Buyers)
### Spring Types (The Core Support Question)
When buyers evaluate a mattress, the real concern is always the same:
**“Will the support be stable, and will complaints stay low?”**
We offer **two spring systems**:
– **Pocket spring (individually wrapped)**
– **Bonnell spring (open coil / round spring)**
Each serves a different market position and price structure.
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### Pocket Springs (Where Comfort and Stability Meet)
Pocket springs are chosen for **better motion isolation and body support**.
Key variables include:
– **Steel wire thickness**
– **Spring coil diameter**
These two factors directly control **firmness, durability, and cost**.
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### Pocket Spring Count by Mattress Size (What Buyers Really Use)
Spring count is not about marketing numbers—it’s about **matching support to mattress size**.
Typical configurations:
– **Single size**: **200–300 pocket springs**
– **Small Double (120 × 190 cm)**: **400–500 pocket springs**
– **Double size**: **500–600 pocket springs**
– **Queen size**: **700–800 pocket springs**
– **King size**: **900–1000 pocket springs**
These ranges are widely used in export programs because they deliver **consistent support without unnecessary cost**.
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### Spring Firmness (Defined by Steel Wire Gauge)
Spring firmness is controlled by **steel wire diameter**, not guesswork.
Common wire gauges:
– **1.2 / 1.5 / 1.8 / 2.0 / 2.2 / 2.4 mm**
Thicker wire means **firmer support and longer lifespan**, suitable for higher-weight users or hospitality projects.
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### Bonnell (Round) Springs (When Firmness Comes First)
Bonnell springs are selected when buyers prioritize **firm feel and cost efficiency**.
Common wire gauges:
– **2.0 mm**
– **2.2 mm**
These specifications fall into the **firm to extra-firm category**, making them suitable for **budget-focused or institutional markets** where firmness is preferred.
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### Why This Matters for Your Program
By controlling **spring type, wire thickness, and spring count**, we help you:
– Match **comfort level to your target market**
– Avoid **over-engineering and cost inflation**
– Maintain **stable quality across large-volume orders**
That’s how we keep support consistent—and returns low.
