Softness and durability

Loss of softness after a long test:

→ Even the mildest systems are sturdy and almost as soft after a permanent charge!

See products :
KEW PLUS
WINGFLEX

Sweetness before and after the long-term test:

→ durably soft!

See products :
WELA LONGLINE
KKM LONGLINE
KIM LONGLINE

source: KRAIBURG laboratory, 2014, 2016

(compare it with DLG test reports: http://www.dlg.org/stableequipment.html#mattresses) English / German