Pressure-Sensitive Conductive Sheet (Velostat/Linqstat)

This is a conductive material known as "Velostat" or "Linqstat", its suitable for wearable applications. The material is  pressure-sensitive: squeezing it will reduce the resistance, so it's handy for making flexible sensors using the material. Its less expensive than off-the-shelf pressure or bend sensors. It comes with a 11"x11" (28cm x 28cm) 4mil (0.1mm) thick piece.

Specifications:

• Dimensions: 11" x 11" (280mm x 280mm)
• 4 mil / 0.1mm thick
• Weight: 18.66g
• Temperature Limits : -45°C to 65°C (-50°F to 150°F)
• Heat Sealable : Yes
• Volume Resistivity : <500 ohm-cm
• Surface Resistivity : < 31,000 ohms/sq.cm

Check this out: Tutorial

Contents and Image taken from Adafruit