Ergonomic shape Sculpted to fit between the femurs and maintain neutral spacing between the pelvis and lumbar spine, this design helps side sleepers avoid rotational torque that can cause morning hip pain, lower back pinching, or sciatic flareups. Breathable cover Wrapped in an airy knit that wicks heat and moisture away from the groin and thigh crease, making it tolerable for hot sleepers, pregnancy nights, or humid climates without fabric pressed against the skin. Pressure relief Distributes the weight of the upper leg from the lower soft tissue, reducing shear on the trochanter bursa and knee cartilage while cushioning spinal torsion that can contribute to nighttime pain. Secure strap Includes an elastic support band that holds the block in place during rollover and flip cycles, preventing pillow migration that could collapse the setup and restart compression on nerves or the bursa. Use scenarios Side sleeper relief For individuals who sleep on their side and experience hip or lower back discomfort in the morning, this product helps maintain neutral alignment and reduces rotational stress. Hot or pregnant sleepers The breathable cover helps manage heat and moisture, making nighttime use more comfortable for hot sleepers, pregnant nights, or humid environments. Active sleepers During rollover or turning in bed, the secure strap keeps the block from shifting, maintaining targeted pressure relief and preventing recompression on nerves or the bursa.