Hi lala!
Welcome to our Mattress Forum 
There is quite a bit of weight differential between you and your husband’s BMI range (35.32 vs 22.3 kg/m2), so a split left/right configuration could prove useful in your situation. A higher BMI presents special challenges and generally requires firmer materials (in the support layers especially). This certainly could be firmer latex. Higher BMI people, in general, will need firmer and thicker comfort layers and firmer support layers than those who are lighter and because no materials will last as long with much higher weights the quality and durability of the materials and components is even more important than normal. See Post #3 for information and suggestions for higher BMI ranges that is worth reading.
With a quick forum search, I found another consumer subscriber who was considering this same mattress so you may find this thread informative .
I am not familiar with NSC Medical Hybrid but they don’t include the density or IFD in their listing which makes it difficult to make any meaningful quality/value assessment. If you manage to find these specifications, I’d be happy to comment upon it.
• Organic cotton quilted cover
• 2.5 cm (1 in.) Natural latex
• 2.5 cm (1 in.) Medi-gel for lumbar support
• 2.5 cm (1 in.) Medi-foam
• 22.9 cm (9 in.) articulating system heavy-gauge pocket coils
Durability is of concern with this mattress especially as your husband has a higher BMI and will need firmer and thicker comfort layers and firmer support layers than those who are lighter and because no materials will last as long with much higher weights. While the top 1" layer is latex, there is no mention of its IFD or the density of the two 1" foam layers below. The three 1" comfort layers being closer to the body are subject to greater mechanical stress and will be the first to breakdown. You can read here more about the mattress specifications you need to know to ensure that the mattress you are considering meets the quality/value guidelines here ) Thicker comfort layers are usually recommended for higher BMI individuals. The thinner a layer is … the more you will feel the properties of the layers below it. Also, someone who sleeps in the prone (stomach) position needs a surface that is firmer and less forgiving. There’s a bit more information about common sleeping positions and appropriate sleep surfaces here .
The thickness of a mattress is much less important than the specifics of what is inside the mattress and which specific design is the best match for you in terms of PPP (Posture and alignment, Pressure relief, and Personal preferences) .
All in all the only plus that I can see with this product is that it has a good return policy
I hope this resets your mattress search and hopefully, you’ll find some better alternatives. you may wish to approach any of our Canadian trusted members. Some of which certainly have good quality/value options close to your budget and criteria.
@ TestingTheWaters
Welcome to our Mattress Forum!
Just for clarity, I don’t make recommendations for stores unless they are a vetted member here of the site. We have decided to discontinue the provision of listings of potential retailers in various geographic regions (unless they are already approved site members), because of the difficulty in maintaining such lists in a retail landscape that is constantly changing, and most importantly the confusion it was creating with the consumer subscribers who incorrectly assumed that these businesses had indeed gone through the strict qualification process and were approved as members of The Mattress Underground.
Here is a listing of Canadian and US manufacturers/retailers who are Trusted Members of our site that carry Latex or all Latex mattresses and ship across Canada that you may wish to consider. They are very seasoned in providing good guidance over the phone and fitting their customers with a suitable product in terms of comfort/support needs.
MFCCanadian online retailer with a very good selection of latex mattresses and hybrids that close to your budget range.
Restmore Bedding Canadian Manufacturer with a large array of mattress choices latex/ pocket coil, hybrid, springs. They are based in Winnipeg, but you can place an order over the phone.
CBH Wood Furniture
DormioCanadian Manufacturer specializing in organic/natural latex mattresses with options that fit all budget ranges.
SnugSleepHas a factory and showroom in North Vancouver, Canada carrying natural latex mattress products.
You can also peruse Our Trusted Mattress Membersas there are some US-based companies that provide products to Canadian market but you’d need to call and ask with the Covid closures.
Phoenix