The Peak SE Pokketz (Rockfax) is an A6 size climbing guidebook that weighs less than 150 grams and is only 7mm thick, so it will fit in your 'pokketz'.
Detailing the best of the south eastern grit crags in the Peak area, Peak SE Pokketz (Rockfax) is the first Rockfax climbing guide to the Peak area to include a mix of grit and limestone. The grit edges from Froggatt and Curbar to Gardoms and Birchen are given ample coverage, then it goes over to Stoney and Horseshoe for a bit of limestone, and Ravensdale adds another aspect to the low grade limestone package. The final section covers the fine crags around Matlock.
The guide focuses on routes from Moderate to HVS and manages to pack more than 500 carefully chosen gems between its covers, but also includes 20 classic E1s and E2s to give something for everyone to aspire to. This book provides a compact and low cost introduction to the brilliant climbing found in the SE Peak Area. It is presented in the same clear and easy-to-follow style that Rockfax are renowned for but it has been stripped down to give just the essentials required by many climbers.