The part in detail:

Part B67995745 , F1 team cap silver

Type:F1 team cap silver

2008 Vodafone McLaren Team Cap
The 2008 Team Cap in the official design as worn by the team at Grands Prix. Embroidered with team logo the cap is waterproof, in breathable ultra light weight but durable fabric. A mesh section on the sides and front and an inside mesh headband support enhanced breathability. Adjustable back for maximum comfort with an embossed McLaren logo on the metal closing clip. The cap is fully lined in rocket red.

Price: £7.00