Walking socks can make a big difference between tired, sweaty, blistered feet and feet that are dry and well protected. It is worth investing in good quality special walking socks which wick away moisture and feel nice and dry all day. They should be long enough to protect the ankle from the edge of your boots.
Convertible walking trousers which can be turned into shorts are a good idea for Andalucían mountains especially in the spring and autumn when temperatures can vary. Wearing jeans is never recommended; they are heavy, stiff and soak up the rain.
Walking poles are always a good idea, especially if you are accustomed to using them. We always have extra walking poles available should you need them.
A comfortable light rucksack is a must. Wearing a shoulder bag even on a short walk can be extremely uncomfortable and is strongly discouraged; you may need your both hands free in case you have to support yourself on a stony path. Fiddling with a shoulder bag when walking, taking photos, looking through binoculars and trying to have a drink out of your water bottle is nearly a super-human task and could be dangerous. We will loan rucksacks if you do not want to pack one.
A fleece sweater is a much better choice than a traditional heavy wool sweater. A light, warm and breathable fleece is a pleasure to wear on a steep path where a wool sweater would be sweaty and unpleasant.
Windproof and waterproof light jacket is all you need for Ronda and Grazalema mountains. Worn over your fleece sweater, it can be removed and rolled neatly into your back pack when you warm up when walking.
Sunscreen. The sun in Andalucía can be very strong even on a relatively cloudy day and you don´t want a burn to spoil your lovely walk. With a cool breeze up in the sierras you may not feel the burn, especially in the winter. You can ignore it but it will be there when you get back home. Please wear a hat for the same reasons.