Which casket interior design involves a series of small raised puffs?

The tufted interior design is characterized by a series of small raised puffs created by pulling fabric over padding and securing it in place, typically with buttons or stitches. This design gives the interior a luxurious, textured look and feel, often found in higher-end caskets. The technique emphasizes comfort and aesthetics, and the raised portions add an element of elegance and depth to the casket's interior.

In contrast, a satin interior primarily features smooth, flat fabric, which does not incorporate the texture and dimensionality found in tufted designs. The quilted interior includes a pattern of stitches that create a more extensive design rather than the small, distinct puffs of tufting. Lastly, a padded interior generally refers to an overall cushioned effect without the specific raised puff detail that defines tufting. Each of these other designs contributes to funeral aesthetics in its own way, but they lack the unique characteristics that define a tufted interior.