The Bryce High Speed sheet comes high recommended due to its balance of speed, power and control. The rubber features Butterfly’s high tension technology with microlayers. The thin surface and medium sponge imparts power, thus resulting great speed and spin. High Tension. Microlayer. Pimples-in. Speed: 9.5. Spin: 8.4. Sheet colour: Red, black. Sponge thickness: 2.1, 1.9, 1.7.