Foam & firmness
Confirm the hand feel before color, cover or carton work begins.
- Core: Slow-rebound memory foam
- Density, firmness and rebound can be tuned
- Foam core reference weight: 400 g
OEM classic spine-protecting lumbar cushion
Classic Spine Lumbar YK004 — OEM Memory Foam Lumbar Cushion
A classic spine-protecting lumbar cushion shaped to the lower-back curve. A human-friendly dual-wing extension supports both sides of the lumbar to stabilize posture, and a central streamline ridge follows the spine so long sitting stays comfortable.
ModelYK004
Size40×29×10 cm
MOQ500 pcs
Real product scenes
See Classic Spine Lumbar in real use.
Studio and in-use photography of Classic Spine Lumbar YK004 — human-scale hero plus structure, height and sleep-position detail shots for product pages and buyer decks.
Design rationale
Why a streamline ridge, not a flat cushion?
Flat lumbar cushions push the lower back forward without following the spinal curve, which can create a pressure hotspot at the L3-L4 vertebrae. The Classic Spine Lumbar adds a central streamline ridge that mirrors the spine's natural arch, distributing pressure evenly from L1 to S1. This is the lowest-cost way to upgrade from a commodity flat cushion to a posture-support product, which is why it leads the volume B2B segment for car and office seating programs.
Product story
A simple lumbar cushion built around the spine.
The structure fits the lumbar curve, with a dual-wing extension that supports both sides of the lower back to stabilize posture. A central streamline ridge follows the spine for long-sit comfort. Use it in the car, office or at home; the nylon-lycra cover is durable and breathable.
01
Lower-back fit
The shape fits the lumbar curve to fill the seat gap.
02
Dual-wing support
Wing extensions support both sides of the lumbar to stabilize posture.
03
Spine ridge
A central ridge follows the spine for long-sit comfort.
04
Car / office / home
Works across car, office and home seating to relieve fatigue.
Technical specification
Buyer-ready data for quotation and sampling.
The fields below are the standard product-detail template fields. Future product pages can reuse this same structure by replacing model-specific data.
Factory reference price
USD 6.8 / pc, MOQ 500 pcs
| Model | YK004 |
|---|---|
| Product size | 40×29×10 cm |
| Foam core weight | 400 g |
| Finished weight | 500 g |
| Filling | Slow-rebound memory foam |
| Inner fabric | None |
| Outer fabric | 230g nylon double-knit fabric |
| Packaging | PE bag flat-pack; carton 60×31×47 cm / 15 pcs |
OEM / ODM template
The details buyers need before a sample.
Use this checklist to lock the sample direction before tooling, quotation and packaging proof. Later product pages can reuse the same structure by replacing the model-specific values.
Cover & label
Match the surface touch and brand marks to your retail channel.
- Default: 230g nylon double-knit fabric
- Embroidery, woven label and wash label available
- Inner fabric: None
Pack & delivery
Check compression, carton size and shelf presentation early.
- PE bag flat-pack; carton 60×31×47 cm / 15 pcs
- Color box, insert card and carton marks available
- Roll-pack or flat-pack per product
Retail story
Align the product story with photography, listing titles and buyer decks.
- Lead with classic spine support
- Low price for volume seating retail
- Flat-pack for efficient shipping
Sample & development policy
Choose the right sampling route before quotation.
The commercial path depends on whether you select a production-ready model, customize branding around an existing core, or develop a completely new geometry.
Existing model sample
Select a listed model and confirm foam feel, cover and available packaging. Sample and shipping costs are paid in advance; timing is confirmed after stock and scope review.
Private-label adaptation
Keep a proven core and evaluate cover fabric, logo, label and retail pack. Sampling cost and timing depend on the selected materials and artwork readiness.
Fully new structure
A new contour or construction requires feasibility review. Development is commonly budgeted at approximately USD 1,000, but the final fee depends on structure, tooling and iteration scope.
No free-sample promise: sample and shipping costs are paid before dispatch. For a qualified bulk order, sample-cost deduction may be discussed case by case. A target of about five working days applies only to suitable, confirmed scopes—not every custom project.
Read full policy↗
Sample-ready SKU
Request quote↗
Need YK004 with your logo and packaging?
Send target market, quantity, cover preference and package direction. SensaRest will reply with sample direction, quote and OEM feasibility.