The textured covers of these notebooks have the feel of old textbooks, and with advanced lay-flat pages, they want to fall open, like a well-loved library book. Go ahead and see for yourself – these are the notebooks your most brilliant ideas have been waiting for.

The Hypothesis series is built with high-quality 100% recycled paper and printed with soy inks, leaving a light footprint. Be inspired to ask the right questions, connect the dots (even when they’re really far apart), and keep pushing humanity forward, so that tomorrow is always brighter than today.

For more information on our paper, see the blog.

If you live in the UK, EFTA, or anywhere outside of the EU, taxes and import fees may be due upon delivery.

For orders shipping to North America, use our USA website for quicker transit times and more affordable shipping costs.

Delivery to zip codes that UPS considers to be "Remote" are charged the UPS Extended Service area fee of €30 in addition to the standard shipping rates.

Orders are processed within 1-3 days (Monday-Friday)
Shipping by GLS & UPS 1-5 days

Please double check your shipping address before submitting your order. We are unable to update your address or cancel you order prior to shipping once it is in our system. If your package is returned to us due to an incorrect address or refused delivery, we will refund the cost of the items less a 20% restocking fee if the goods are still in saleable condition. Shipping costs are non-refundable.

To start a return please contact us using the contact form. Returns must be made within 30 days of placing your order.