Understanding what a home device can and cannot do
Let's be direct, because a lot of sites in this category are not. Sciatica is a symptom, not a diagnosis. It can come from a disc, from bony narrowing, or from soft tissue tension around the lower back and hip. No wearable device treats a disc.
What warmth, vibration and lumbar support can do is reduce the muscular guarding that piles on top of the original problem — the tight, braced, never-relaxing lower back that makes everything else worse. That is why so many physiotherapy home programmes are built around heat, gentle movement and posture support.

