Enfain Custom Brand Promotional Card USB Memory Stick 1GB - 50 Pack Business card style. Pack of 50. Custom printing available. Good for corporate giveaway or tradeshow event. Measurement: 3.30" x 2.05" x 0.08 ". Easy to carry in Wallet. Compatible with USB 2.0, backwards USB 1.1. No need to install any software. Plug in and use. Full printing artwork <span class="a-text-bold">Long side: Short side Ratio = 83:52</span>. Please <span class="a-text-bold">convert the artworks to curves</span> before sending to us. Preferred artwork format: <span class="a-text-bold">Vector PDF ( Size&lt;=10MB).</span> Artworks for <span class="a-text-bold">both sides</span>.