Mm, I personally think any synthetic fiber content sucks. Here, it's even a lot though. Wool has amazing properties. Such as: it doesn't really catch smells and if so, they mostly vanish by airing it out. It's warm without making you sweat uncomfortably (unless you really wear too much). It warms you even when wet and doesn't absorb water unless really wet (makes it harder to stain also). It's biodegradable. It doesn't contain microplastics. It doesn't really burn unless REALLY hot (interesting property there!) At that amount of synthetic fiber, I wouldn't call it a wool sweater anymore. Synthetic fiber requires you to wash it regularly. It will smell bad. You will sweat. It will shed microplastic. If polyacrylic burns, it releases cyanide. It's essentially harmful to the environment. I'd not get it for longevity and joy about the material. Only for the design if you really like it! More on reddit.com

https://califabrics.com/search.php?search_query=Sweater+knit§ion=product sweater knit basically. More on reddit.com

Wool will be most comfortable. It’s ’thermoregulating’ because of its hollow fiber structure, which also helps sequester moisture, and allow it evaporate, without feeling damp or clammy. Wool with 20 or 30 percent nylon or acrylic is also comfortable, and somewhat more durable. A bit of mohair adds a lot of durability and warmth, but is often scratchier than wool. Merino wool is soft and non itchy, but more subject to pilling and wear through abrasion than other wools. Sweaters knitted at a tighter gauge will be less subject to snags and runs. Wool that has shrunk cannot be restored or ‘stretched out.’ Wool does though, readily shed most dirt and stains, so don’t be deterred by grunge or odor. Don’t overlook obviously dated wool sweaters. I recently purchased a 1962 wool letter sweater from Purdue. After a wash, the sweater looked like new despite its age. Cashmere and alpaca sweaters are softer, less durable, less retentive of shape, more pilly, and a bit warmer than wool. All natural fiber sweaters should be washed immediately or sequestered in a freezer until they can be, to avoid a moth infestation of other clothing and carpets. More on reddit.com

Real sweaters made of wool or cashmere don't need much care. Only hand wash them if you really really need to, maybe once in 2 years. Wool is self-cleaning material. Use freezer to remove any smell, air after each use, steam if need, and wipe any stains away. More on reddit.com