A smooth, irregular surface with gentle rises and valleys that create a constantly changing pressure pattern as the roller moves. No hard edges, no sharp transitions — just a soft, rolling sensation that shifts across the muscle like a pair of palms working in slow circles. The organic shape means no two passes feel exactly the same. The subtle variation keeps the tissue from acclimating to a single pattern, which makes the Flow feel more like human hands than a machine — even at low pressure settings. Comes as a set of 3 — one for each of Therabot's massage nodes. Best for: General leg maintenance, evening relaxation, light recovery days, or anyone who's new to Therabot and wants to start gentle. The feeling: Like a slow, open-palm massage that moves in unpredictable, soothing patterns across the muscle. Intensity: Gentle to moderate. The soft contours distribute pressure broadly, so even at higher expansion settings the sensation stays comfortable.