Frame-Pack ToptubeThe ORTLIEB Toptube Frame Pack is the smart solution for all who want to use their frames main triangle for storage space without having to do without their water bottle. The solution also works for those who have full suspension mountain bikes with limited triangle space. With its 4 litre payload, the Toptube Frame Pack provides plenty of space for heavy equipment such as tent poles, tools and food supplies, while also helping to secure a low center