17 Polymeric and elastomeric materials, being semi-finished goods, foamed and unfoamed for use in manufacture of shock-absorbing and impact-absorbing parts and components for, clothing, footwear, headgear and articles for protection against injury or accident, body, limb and head protectors, protective helmets, body armour, cushioning devices for clothing, footwear, headgear, sportswear and underwear; polymeric and elastomeric materials, being semi-finished goods, foamed and unfoamedfor use in manufacture of shock-absorbing and vibration-damping for cases, gaskets, fixings, spacers, seals, insulators for portable electronic devices