Every year, more than 3 million older adults are treated in emergency departments for fall-related injuries. And every year, that number spikes twice: once in the summer months, once in winter. The winter peak gets all the attention. The summer peak gets almost none. So let me explain why it happens, and why it is almost entirely caused by footwear.
Why Does Summer Cause More Falls?
Three compounding factors hit at exactly the same time every June. Each one would be manageable alone. Together, they create the deadliest walking conditions of the year for anyone over 60.
Seniors switch to sandals and flip flops with no grip or stability
In winter, most seniors wear shoes with some structure, ankle coverage, and a real outsole. Come June, they swap to whatever is light and cool, usually flat rubber flip flops or open sandals with zero traction, no foot support, and no proprioceptive feedback whatsoever. The foot suddenly loses all structural support exactly when outdoor surfaces are most unpredictable. Wet pool decks. Uneven cobblestone streets. Slippery marina docks. The wrong sandal turns every one of these surfaces into a fall waiting to happen.
Summer heat causes feet to swell, and most sandals have no room for that
When you walk in summer heat, blood circulation increases and feet swell significantly, often by a full half-size by midafternoon. Most sandals are designed with a fixed, narrow shape that compresses swollen feet, cuts into the skin, and forces toes together. That compression does not just cause pain. It destabilizes the entire stride. Toes cannot splay for balance. The foot cannot distribute weight correctly. Every step becomes less stable than the last. The OpenStep's anatomical wide toe box and 100% breathable upper give swollen feet room to spread and breathe naturally, keeping your base of support stable throughout the entire day.
Thick soles cut off the nerve signals your brain needs to keep you upright
Your feet contain 200,000 proprioceptive nerve endings that send a constant stream of sensory data to your brain: surface texture, pressure distribution, ankle angle, ground slope. That signal is what your body uses to make 50-100 micro-corrections per minute as you walk. Most sandals use thick EVA foam or rigid rubber soles that absorb and block this signal almost entirely. Your brain loses the real-time ground map it needs to prevent stumbles. In summer heat, where peripheral nerve conduction is already slower due to temperature, this proprioceptive blackout becomes genuinely dangerous.
