No. 5 for everyday cushion covers
A common option for removable sofa cushions, pillows and lighter cover applications where a neat, flexible finish matters.
No. 7 and No. 8 for more strength
These middle sizes suit heavier covers or frequently opened sections while remaining less bulky than many No. 10 applications.
No. 10 for heavy-duty work
Often considered for thick covers, mattresses, bags and demanding commercial upholstery. Confirm that the slider matches the chain size.
Colour and slider compatibility
Match the chain colour to the fabric where it may be visible. Never force a slider intended for another size, as this can damage the chain.