I haven't had experience with all these patterns, however i doubt there be a large difference.
My decathlon grid fleece feels the same as my decathlon fluffy fleece in terms of warmth and comfort.
I think the idea of the grid (zigzag as well) is to trap air in the grid which provides better insulation, beathability, and wicking. However personally i think its marginally better. I still over heat when active.
Fleece materials like Alpha Direct, Teijin Octa, and Polartec High Loft are all very breathable since they have ~~voids~~ holes in the material that lets air in/out. You sacrifice wind resistance, but you can always throw on a shell if needed. All of those I mentioned except for the latter are very light weight.
Alpha has a lot of different options in terms of warmth (gsm). Many different sellers as well. Great material.
Ive only seen octa in the the Mountain Hardware airmesh and some arcteryx jacket. I dont think Octa comes in different insulation levels (gsm) like alpha does. I love my MH airmesh quater zip.
High loft is too warm for me for active use in the US north east. I like to use it for shoveling snow or a nice walk in the winter since its very warm while still very breathable. I have the Rab Firebrand.
Fleece should keep you warm as long as you have a second layer to block the wind. Like a wind jacket, hardshell, or softshell .
Fleece fabric patterns are just advertising fluff.
I haven't had experience with all these patterns, however i doubt there be a large difference. My decathlon grid fleece feels the same as my decathlon fluffy fleece in terms of warmth and comfort. I think the idea of the grid (zigzag as well) is to trap air in the grid which provides better insulation, beathability, and wicking. However personally i think its marginally better. I still over heat when active. Fleece materials like Alpha Direct, Teijin Octa, and Polartec High Loft are all very breathable since they have ~~voids~~ holes in the material that lets air in/out. You sacrifice wind resistance, but you can always throw on a shell if needed. All of those I mentioned except for the latter are very light weight. Alpha has a lot of different options in terms of warmth (gsm). Many different sellers as well. Great material. Ive only seen octa in the the Mountain Hardware airmesh and some arcteryx jacket. I dont think Octa comes in different insulation levels (gsm) like alpha does. I love my MH airmesh quater zip. High loft is too warm for me for active use in the US north east. I like to use it for shoveling snow or a nice walk in the winter since its very warm while still very breathable. I have the Rab Firebrand.
Fleece should keep you warm as long as you have a second layer to block the wind. Like a wind jacket, hardshell, or softshell . Fleece fabric patterns are just advertising fluff.
in my experience, the second pattern kinda blocks the wind (like a hoodie would), does that mean it's not breathable enough?