Bag sizes

For frequent travel and weekend trips, a carry-on size (typically around 55 cm x 40 cm x 20 cm) or a compact 20–40 litre backpack is ideal. If you’re packing for work, a laptop bag with a 13"–15" sleeve and a tote or messenger with a 12–16 inch width offers practical space without bulk. Always check airline cabin baggage rules and personal item allowances to match the bag size to the trip length, ensuring you stay within restrictions and avoid extra charges.
Having a bag size chart handy helps you quickly compare dimensions and capacity across Wowcher UK listings, so you can choose a bag that fits your travel wardrobe, gym gear, or daily essentials. Consider expandable bags for occasional larger loads and packing cubes to maximize interior space without increasing exterior dimensions.

Look for exterior measurements (height x width x depth) and the listed capacity in litres for backpacks, duffels, and tote bags. Compare the dimensions to your body frame and typical packing needs—think laptop size, water bottle, notebook, and shoes. Also check interior dimensions to ensure compartments and sleeves can hold your items securely without overstuffing, and confirm any expandable sections or compression straps that alter usable space.
If you’re unsure, size filters on Wowcher UK listings can help you narrow down options by capacity, dimensions, and bag type (carry-on, backpack, tote, or duffel). Reading reviews for real-world measurements can also clarify whether a bag tends to run small or true to size.

Backpacks commonly range from 20 to 60 litres, with 20–30 litres suitable for daily commuting and 40–60 litres for short trips or overnight stays. Totes often measure around 12–18 inches in width and 9–12 inches in height, with capacities from 8 to 20 litres for everyday use. Duffel bags vary from 30 to 60 litres, with some expandable models offering extra space when needed. Always check the exact dimensions and whether the bag includes a detachable shoulder strap, pockets, and end compartments for easy packing.
Knowing these typical sizes helps you compare Wowcher UK listings quickly and choose a bag that matches your lifestyle—whether you’re a gym-goer, student, traveler, or professional needing a reliable work bag.

Yes. Many bags come with expandable zippers or adjustable telescoping sections that increase capacity from, say, 25 litres to 35 litres or more. This is especially helpful for weekend trips when you might add a jacket or extra shoes. When shopping, look for mentions of expandability, compression straps, or modular inserts that let you reconfigure the interior without changing the outer dimensions.
Expandable bags are often a smart choice if you want one versatile option for multiple occasions, and you can verify the final size at checkout to ensure it remains within airline limits if you’re traveling by plane.

Use a flexible tape measure to record the exterior dimensions: height, width, and depth. For backpacks and duffels, fold the bag empty to measure the maximum available volume, then convert to litres if the product spec lists litres. If you’re comparing against airline standards, keep a small note of the cabin bag dimensions recommended by the airline and match the bag size to that range. For totes and laptop bags, measure the interior sleeve size to ensure your devices fit securely.
Finally, verify the advertised size on Wowcher UK with user-provided measurements in reviews, as real-world use may differ slightly from the stated specs.

If the size isn’t exact, look for the closest match and check return policies. Contact the seller for precise measurements or a size chart before purchase. Compare multiple Wowcher UK listings to see if one provides clearer dimensions or a more reliable capacity figure. Reading customer photos and questions can also confirm whether the bag runs large or small.
Remember to consider whether weight limits, carry-on restrictions, or extra pockets affect how you plan packing. When in doubt, opt for a bag with transparent size specs and an expandable feature to cover a wider range of uses.