Compare / bags
Live · checked today · 8 UK retailers tracked
Cobra Ultralight PRO Bag vs Sun Mountain 3.5 LS Bag
Quick verdict
Checked daily across 8 UK retailers
Price and availability verdict
Cobra Ultralight PRO Bag is currently £129, while Sun Mountain 3.5 LS Bag is currently £159.95. Deal scores are Cobra Ultralight PRO Bag 18/100; against tracked history, Cobra Ultralight PRO Bag is 52% above its lowest tracked price and Sun Mountain 3.5 LS Bag is 7% above its lowest tracked price. Cobra Ultralight PRO Bag is currently available from 6 UK retailers, versus 2 for Sun Mountain 3.5 LS Bag.
Deal intelligence
Should you buy now, or wait?
Neither is at its low today. The Sun Mountain 3.5 LS Bag is closest, within 7% of its lowest tracked price. The Cobra Ultralight PRO Bag has more room: its tracked low is £84.95.
Cobra · Ultralight PRO Bag
High vs its history
Today £129 · typical £99.95 · lowest £84.95
On sale 2 times in the last 4 months
Sun Mountain · 3.5 LS Bag
Not enough data yet
Today £159.95 · typical £159.95 · lowest £149.95
On sale 1 time in the last 4 months
Head to head
Category leaders, from the data on this page
- Cheapest new Ultralight PRO Bag £129 vs £159.95
- Closest to its tracked low 3.5 LS Bag 7% above vs 52%
- Most retailers in stock Ultralight PRO Bag 6 vs 2
Where to buy
8 UK retailers, checked daily
Price trajectory
How each has moved since we started tracking
Lowest tracked price per day, any condition. Caddence tracks both daily. Shaded spans are days we couldn’t collect prices — the lines break rather than guessing.
Cobra · Ultralight PRO Bag
↓ £10
since 14 March 2026
Lowest £84.95 on 12 April 2026
Sun Mountain · 3.5 LS Bag
↓ £59.05
since 14 March 2026
Lowest £149.95 on 28 June 2026
Waiting for a better price?
Set a free alert and we’ll email you when either drops to your target.
Related bags comparisons
More head-to-head price checks
Common questions about the Cobra Ultralight PRO Bag vs Sun Mountain 3.5 LS Bag
Prices shown are the cheapest in-stock price per retailer tracked by Caddence, updated daily. Always confirm the final price on the retailer's site.