X-Cup Collapsible
Sea to Summit X-Cup Collapsible Review
Tested and reviewed for bikepacking use
The X-Cup is a 250ml collapsible cup with a rigid polypropylene rim and flexible silicone body. It collapses flat to half an inch tall, taking up virtually no space. Useful for morning coffee, measuring water, or a small drinking vessel when you don't want to dirty your cook pot.
Who Is the Sea to Summit X-Cup Collapsible Best For?
Bikepackers who want a dedicated drinking cup without any pack space penalty. If that describes your riding style, the X-Cup Collapsible should be at the top of your shortlist. It sits in the Camp Accessories category alongside 6other products we've reviewed.
How It Compares
At 30g and $12, the X-Cup Collapsible is the lightest option in this category. It's also the most affordable option available.
The price-to-weight ratio comes in at $40 per 100g — a premium price point, but you're paying for quality, materials, and design that justify the investment for serious bikepackers.
What We Like
- +Collapses nearly flat — takes up zero usable space
- +Rigid rim makes drinking comfortable
- +Heat-resistant silicone handles hot drinks
Watch Out For
- −250ml is small — only good for espresso-sized portions
- −Silicone can retain flavors between uses
- −Flexible body makes one-handed drinking awkward
The Bottom Line
The Sea to Summit X-Cup Collapsible earns a 4/5 rating. It's a solid performer that does most things well. Collapses nearly flat — takes up zero usable space is the standout feature, though 250ml is small — only good for espresso-sized portions is worth considering before you buy.
User Reviews
Loading reviews...
More in Camp Accessories
Ultralight camp chairs, pillows, and accessories that make bivvy life more comfortable.