fitguarantee
nounUK /ˈfɪtˌɡærənˈtiː/
US /ˈfɪtˌɡærənˈtiː/
A fit guarantee is a promise that something will be the right size and shape for you.
The shoe shop offers a fit guarantee, so you can bring the shoes back if they hurt your feet.
OTHER MEANINGS
2. A promise that a piece of clothing or equipment will suit a person's body or purpose.
The bike came with a fit guarantee for riders of any height.
3. An assurance that a part will work properly with a machine or system.
The new filter has a fit guarantee for all standard models.
4. A pledge that a plan or idea will suit a group's needs.
The teacher gave a fit guarantee that the game would work for every team.