"Fast shipping." "Easy returns." "Hassle-free." Every store uses these words, which is exactly why they mean nothing. They are the background noise of ecommerce — reassurance-shaped phrases that a wary customer's brain filters out before it registers them. The doubt they were meant to answer stays exactly where it was.
The fix is boring and powerful: replace the adjective with a number. Call it the 24-hour rule. Anywhere you are tempted to write a soft, comforting word about time, cost, or consequences, write the concrete figure instead. Specificity is what makes a promise believable — and belief is what closes the gap between browsing and buying.
01 · The problem
Vague words cost sales.
A soft claim asks the customer to do the work of believing it. "Fast" — how fast? By when? Fast enough for the birthday on Saturday? The reader has to guess, and under uncertainty people guess pessimistically. Your comforting adjective quietly becomes a reason to hesitate.
Worse, vague copy reads as evasive. When a brand will not commit to a number, experienced shoppers assume the truth is unflattering. The absence of a specific promise is itself a signal — and rarely a good one.
Every soft word about time or money is a question you have left the customer to answer alone.
02 · The rule
Put a number on the promise.
The rule is simple to apply and hard to argue with: wherever a vague reassurance appears, swap in the concrete figure. The transformation is immediate.
- "Fast shipping" becomes "Ships within 24 hours, arrives in 2–4 business days."
- "Easy returns" becomes "30-day returns, free label, refund in 3 days."
- "Order soon" becomes "Order within 6 hours for dispatch today."
- "In stock" becomes "12 left, ships from our warehouse today."
Notice what each number does. It converts a feeling into a fact the customer can plan around. A date they can hold you to is worth more than a superlative they have to trust on faith.
03 · The questions
The three questions to pre-answer.
Behind almost every abandoned cart sits one of three unanswered questions. Answer all three with numbers, before the customer has to go looking, and you remove most of the friction around the purchase.
When will it arrive? Not "fast" — a delivery window or, better, a calculated date for their location. What if it is wrong? Not "easy returns" — the window, the cost to them, and how fast the refund lands. What does it really cost? Not "affordable shipping" — the exact figure, or the threshold for free, shown before checkout so nothing jumps at the final step. Silence on any of these is where doubt grows loudest.
Picture the difference in practice. One product page says "fast, free shipping and hassle-free returns." The other says "Order by 4pm today and it arrives Thursday, free over £50, with 30 days to send it back for a full refund." The first is a mood. The second is a plan the customer can act on — they know whether it makes the weekend, what it costs, and how to undo it if it disappoints. Same facts, radically different confidence, and confidence is what converts.
04 · Placement
Where the doubt spikes.
A precise promise buried in a shipping policy page is a promise the customer never sees. These answers have to travel to the moments of decision, in plain sight, where the hesitation actually happens.
Put the delivery estimate on the product page beside the buy button, not three clicks away. Surface the returns terms at the point of adding to cart. Show shipping cost and the free-shipping threshold before the final checkout step, never as a surprise at the end. This is the copywriting layer of UX — small, specific lines of text placed with the same care as any button, each one dissolving a doubt exactly where it forms.
05 · Honesty
Promise only what you can keep.
The rule has a hard edge: a concrete promise you break is far more damaging than a vague one you never made. Numbers set expectations precisely, which means they punish you precisely when reality falls short. Publish a delivery date and miss it, and you have manufactured a disappointment that a soft phrase would have avoided.
So the 24-hour rule is also an operations discipline. Only commit to timeframes your fulfilment can actually hit, then let the copy reflect the real capability. This matters doubly in markets where cash-on-delivery is common — clear, honest delivery expectations are one of the levers that cut failed deliveries and returned parcels, the leakage a tool like COD Guard exists to measure. Precise and true beats fast and fictional every time.
Quick check
Have you named the numbers?
- Every "fast" or "easy" has been replaced with a concrete figure.
- Delivery timing, return terms, and true cost are all answered up front.
- The promises appear at the buy button and in cart, not buried in policy.
- Shipping cost is shown before the final checkout step.
- Every number is one your operation can reliably keep.
Trade adjectives for facts.
Customers do not buy on comfort words; they buy on confidence, and confidence is built from specifics they can verify. Name the hours, the days, the cost, the terms — and keep them. The 24-hour rule costs nothing to apply and quietly removes the doubt that sits between a full cart and a placed order.