Big bottle? No problem. The Frank Green Car Cup Holder Expander is designed to make your 34oz / 1L bottle fit comfortably in your car, secure, stable, and no awkward wedging required. Made from durable silicone and available in six signature colours, it’s a practical little upgrade that makes everyday driving easier. Mix and match to suit your bottle, your car, or your mood. Details: - Designed for frank green 34oz / 1L Ceramic Reusable Bottles - Made from durable silicone - Helps larger bottles fit standard car cup holders Dimensions: Height - 114mm, base outer diameter - 75.8mm