New £20 Waterproof Dry Bag Protects Phones and Keys for Beach Days and Outdoor Adventures

A £19.99 waterproof dry bag is going viral across the UK as the summer holiday season ramps up. The Dock and Bay Small Waterproof Dry Bag, sold on Amazon, is designed to keep phones, keys, and other valuables completely dry at the beach, on boats, and at festivals, according to Wales Online.
The 5-litre bag is made from 100% recycled polyester and carries an IP66 waterproof rating — meaning it can handle powerful jets of water from any direction. At under £20, it is winning over casual holidaymakers who want solid water protection without paying outdoor-brand prices, Cornwall Live reports.
The bag's IP66 rating is a key selling point at this price. IP66 means it is fully dust-tight and resists powerful water jets from any angle. That is enough protection for a splashy kayak trip or a rainy festival. However, IP66 does not mean the bag can be submerged for long periods — that would require an IP67 or IP68 rating, an important detail for buyers who plan to dive or snorkel.
Each bag is made from recycled polyester, with Dock and Bay claiming the material comes from diverted plastic bottles. The company earned B Corp Certification with a score of 83.6, according to Devon Live, which reflects its commitment to using sustainable materials across its product range.
One of the bag's biggest draws is its versatility. Buyers can wear it as a crossbody bag, around the waist like a bum bag, or carry it by the handle. That flexibility makes it useful far beyond the beach — from paddleboarding in Cornwall to navigating a busy airport terminal, Nottingham Post notes.
The bag comes in bold, colourful patterns like 'Hot Tropics' and 'Wavy Baby.' Some shoppers love the bright look because it is easy to spot on a crowded beach. Others find the patterns too loud for everyday city use. Muted colourways tend to sell out faster, based on customer feedback reported by Leeds Live.
Shoppers on Amazon and the Dock and Bay website have broadly praised the bag. The recycled polyester has a soft feel that sets it apart from older-style PVC dry bags, which tend to feel stiff and rubbery. Many reviewers called it 'perfect for the beach,' according to Cheshire Live.
Not every review is glowing. Some buyers felt the bag was more compact than they expected from a 5-litre size. Others said the bright patterns were not for them. Still, the overall sentiment is strongly positive, with the bag sitting at a 4.5 out of 5 star average on Amazon, Glasgow Live reports.
Dock and Bay was founded in 2015 by Andy Jefferies and Ben Muller, two former bankers who started with a single microfibre beach towel. The brand landed on BBC's Dragons' Den in 2017, where Deborah Meaden invested £75,000 for a 10% stake. That backing helped scale the company into a global operation with distribution in over 600 travel retail locations, Lincolnshire Live reports.
The global waterproof bag market is currently valued at $1.5 billion and is projected to reach $11.7 billion by 2033, growing at a rate of 5.9% per year. Dock and Bay sits squarely in the middle of that growth — offering lifestyle-focused buyers a product that undercuts premium outdoor brands while still delivering reliable water protection at a price most holiday budgets can absorb.
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