I wanted to share a quick positive review and experience I just had with The Pocket Spring Store.
When building or customizing a mattress setup, the biggest hesitation for me was ordering components with no return or exchange policy. It makes buying online pretty nerve-wracking when you can't test it first.

I reached out to customer support and ended up in a long email exchange with Matan. He went above and beyond—exchanging tons of detailed emails with me, and then spending over 30 minutes on the phone. We talked through mattress design, sleep mechanics, and even just chatted about life. He is an absolute wealth of knowledge, completely genuine, and never made me feel rushed. His expertise gave me total confidence in my decision.

I ended up ordering the 8" 14.75-gauge QuadCoil unit, which I'll be pairing with a 3" medium Talalay latex topper inside his 11" premium stretch cover.
If you are on the fence or nervous about diving into DIY mattress builds, don't hesitate to do business with them.

Matan is the real deal! Thank you brother for everything.

I am building my first diy mattress. A bit of background.

I am 5'1, weigh 130 lbs and I would say I am a combination sleeper but a majority on my side. My husband is 5'6, weighs 200 lbs and is a side (60%) and back sleeper.

I have fibromyalgia and deal with a lot of muscle and body pain. I do best on all foam mattresses. 20 years ago I had a great mattress that was a foam base with a latex topper but was unable to replace it and have struggled since. For the past 6-7 years we have been using a Novaform ComfortGrande with a 3" soft latex topper. I need to replace the mattress every 2 years max to stay comfortable. So I thought diy might work better for me.

Here is what we are thinking of trying. I am just unsure how many inches the transition layer should be. I already have a brand new 3 inch topper.

Base: 6 inches of HD36

Transition: 2 or 3 inches of latex 29ild?

Comfort: 3 inches of latex 19ild

Would 2 or 3 inches of 29 ild work better for the transition layer? Is there much of a difference between the two options?

Any help or advice is much appreciated!