Apparatus and system for turning and positioning a patient

A first wedge for use in positioning a patient on a support surface, the first wedge comprising:

• a first wedge body comprising:
• a first base wall, and
• a first ramp surface, the first ramp surface contiguous with the first base wall, the first ramp surface comprising:
• a plurality of first ramp surface edges,
• a first ramp surface first portion contiguous with each of the first ramp surface edges, the first ramp surface first portion having a first ramp first coefficient of friction, and
• a first ramp surface second portion surrounded by the first ramp surface first portion, the first ramp surface second portion having a first ramp second coefficient of friction, the first ramp second coefficient of friction greater than the first ramp first coefficient of friction.

A first wedge for use in positioning a patient on a support surface, the first wedge comprising:

• a first wedge body comprising:
• a first base wall comprising:
• a first base wall first portion, the first base wall first portion having a first base first coefficient of friction, and
• a first base wall second portion surrounded by the first base wall first portion, the first base wall second portion having a first base second coefficient of friction, the first base second coefficient of friction greater than the first base first coefficient of friction, and
• a first ramp surface, the first ramp surface contiguous with the first base wall, the first ramp surface comprising:
• a first ramp surface first portion having a first ramp first coefficient of friction, and
• a first ramp surface second portion surrounded by the first ramp surface first portion, the first base wall second portion having a first ramp second coefficient of friction, the first ramp second coefficient of friction greater than the first ramp first coefficient of friction.