A reusable cup that keeps coffee hot, doesn’t leak in a bag and feels decent to drink from is genuinely hard to find. We’ve tested KeepCup, Stojo, Chilly’s, Frank Green, Huski and a dozen others in real-world commutes.
At a glance — our top three picks
Top Pick
Frank Green Ceramic Reusable Cup
The most leak-proof reusable cup on the UK market. Push-button seal, ceramic-lined steel body.
Runner-up
KeepCup Original Coffee Cup
The cup that started the movement — glass or cork band, sizes 6oz to 16oz.
Budget
Chilly’s Series 2 Coffee Cup
Brilliant insulation (12hr hot) and sub-£20 price. The best commuter option.
Our top picks compared
| Product | Best for | Rating | Price | Jump to review |
|---|---|---|---|---|
| Frank Green Ceramic Reusable Cup | Overall best buy | ★★★★★ | £££ | Read review ↓ |
| KeepCup Original Coffee Cup | Enthusiast upgrade | ★★★★½ | ££££ | Read review ↓ |
| Chilly’s Series 2 Coffee Cup | Best under budget | ★★★★ | £ | Read review ↓ |
Top Pick: Frank Green Ceramic Reusable Cup
The most leak-proof reusable cup on the UK market. Push-button seal, ceramic-lined steel body.
Pros
- ✅ Genuine leak-proof in bags
- ✅ Ceramic-lined interior doesn’t taste metallic
- ✅ Sizes from 8oz to 16oz
Cons
- ❌ £25+ price
- ❌ Hand wash only
Runner-up: KeepCup Original Coffee Cup
The cup that started the movement — glass or cork band, sizes 6oz to 16oz.
Pros
- ✅ Looks like a real takeaway cup
- ✅ Dishwasher safe
- ✅ Widely accepted in shops
Cons
- ❌ Plastic lid can drip when carried
- ❌ Glass version is heavy
Budget: Chilly’s Series 2 Coffee Cup
Brilliant insulation (12hr hot) and sub-£20 price. The best commuter option.
Pros
- ✅ 12-hour hot retention
- ✅ Leak-proof twist lid
- ✅ Under £20
Cons
- ❌ Not accepted by every shop
- ❌ Fixed 340ml capacity
Buying guide
Material
Glass is the best for taste but heavy. Stainless steel insulates far better and is drop-tolerant. Silicone collapsibles are great for travel but cool fast.
Lid type
Flip-lids prevent splashes but can drip through the hinge. Sliding-lock lids (Frank Green) are the most leak-proof.
Accepted in coffee shops?
Most UK chains accept reusable cups. Specialty shops often give a 25–50p discount. Check size — many shops only fill up to their cup line.
Care
Dishwasher-safe is essential for daily use. Avoid decorative paint finishes that peel in the machine.
Frequently asked questions
How much does a reusable cup save?
Best for commuting?
Can I microwave them?
We may earn a small commission on purchases made through the links above, at no cost to you. This helps us keep LookInto.co.uk independent. We only recommend products we would happily buy ourselves.