150 PCS Earring Backs,Silver Butterfly Style 100 + Disc Shaped 50 PCS,with Storage Box,Suitable for All Kinds of Earrings,for Sports,Fitness,Outdoor Activities and Parties(Silver)

TWO STYLES FOR DIFFERENT EARRINGS：Delicate studs need a low‑profile back. Heavy hoops need a wider grip. This set gives you 100 metal butterfly backs (4.3×6mm) that lie flat and hidden, plus 50 disc‑style backs (10.5×5.5mm) with a larger surface. One box covers every pair you own. STAYS LOCKED DURING GYM & OUTDOOR ACTIVITIES：Running, jumping, or hiking? Soft backs can shift with sweat. These metal butterfly wings close firmly around your post and stay locked through any movement. No mid‑workout checking – just keep going. KEEP SPARES EVERYWHERE WITH STORAGE BOX：The included storage box keeps all 150 pieces organised – no more loose backs rolling around your drawer. Toss the box in your suitcase, keep it on your dresser, or pull out a few to stash in your travel pouch. Always ready when you need one. EASY TO SQUEEZE, CUSTOM FIT：Some posts are thicker, some thinner. These metal butterfly backs let you gently squeeze the wings closer or leave them looser – so you can dial in exactly the right grip for each earring. Comfortable fit, every time. SHARE WITH FAMILY OR FRIENDS：Your sister lost a back. Your friend admires your earrings and wants a spare. With 150 pieces, you can hand a few to someone who needs them and still have more than enough for yourself. Generous quantity without being overwhelming.