Spring mattress and set how to set?

Spring mattress set to unpick and wash, inside and outside the internal and external set of installation will give consumers inconvenient, here small make up to you about the spring mattress inside and outside set how to set? Spring mattress cover how to install inside and outside? Spring mattress inside and outside the set of installed video? Spring mattress inside and outside the set of installation images?

a, flat out spring mattress core

2, first to one side, side again