Most "waterproof" throws are not liquid proof. They are coated. A finish is sprayed or bonded onto the surface of the fabric, and water beads up on top of it. Run a glass of water over one and it passes, which is why the category gets away with the word.
Lube is not water. Silicone lube in particular has very low surface tension, which means it does not bead. It flattens out, creeps into the weave, and goes wherever the fibers go. A surface coating has nothing to stop that.
The Love Blanket is not coated. It is built around a fully sealed membrane laminated between the top layer and the backing, so there is no path through the fabric at all.
Three layers:
- 250GSM flannel fleece on top
- a sealed membrane in the middle
- 210GSM sherpa underneath.
Soft on both sides, sealed all the way through.